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Zephyr HxM Smart Heart Rate Monitor for iPhone 4S, iPad (3rd Gen) & iPhone 5 with Bluetooth Low-Energy (4.0)

3.1 3.1 out of 5 stars 149 ratings
Currently unavailable.
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Brand Zephyr
Color Black
Compatible Devices Smartphones
Screen Size 0.96 Inches
Item Weight 0.04 Pounds
Battery Life 12 months
Sensor Type Wearable

About this item

  • Named #3 best health and fitness accessory
  • Tracks Heart Rate, Heart Rate Variability, R-R Interval, Stress, Intensity, Activity Level and Calories while you work out
  • A heart rate monitor built for Bluetooth Smart/Low-Energy (4.0) devices including iPhone 5 and 4S, iPod Touch, iPad and iPad Mini, and Android 4.3
  • Comfortable, adjustable strap is Machine Washable
  • Sensor is Waterproof up to 1m
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Top Brand: Zephyr

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Product Description

The Zephyr HxM Smart is a wearable fitness-tracker designed for use with iPhone 5, 4s, Android 4.3 and other Bluetooth Smart devices. It combines our Smart Fabric, heart rate sensor technology, movement sensors and Bluetooth Smart connectivity on a chest strap for athletes who live on the cutting edge of technology. Using technology developed for NASA, Military Special Forces and Hospitals, the HxM Smart is durable, waterproof (1m) and built with firmware that can be upgraded over-the-air. Smart Fabric is conductive fabric that provides market-leading comfort and accuracy. It is woven onto a soft, elastic, adjustable Machine Washable strap worn around the chest. It is covered by a 12-month limited warranty from defects and the strap itself is replaceable. The freedom to run: your phone, your app no subscription fees! Why should you be tied to a device that only lets you use one app and charges you a subscription fee for the privilege? With an open communication design, the HxM provides unparalleled flexibility with the phones and applications you use. Supported by dozens apps for both iOS devices and Android 4.3 phones.

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 2.55 x 1.25 x 0.45 inches; 0.64 ounces
  • Item model number ‏ : ‎ HxM2
  • Date First Available ‏ : ‎ October 26, 2012
  • Manufacturer ‏ : ‎ Zephyr
  • ASIN ‏ : ‎ B009XDTN80
  • Customer Reviews:
    3.1 3.1 out of 5 stars 149 ratings

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Customer reviews

3.1 out of 5 stars
3.1 out of 5
149 global ratings

Customers say

Customers like the ease of use of the biometric monitor. They mention that it pairs easily with apps and that the strap is comfortable. Some are also happy with the comfort. That said, some disagree on performance, connectivity, accuracy, battery life, quality, and appearance.

AI-generated from the text of customer reviews

86 customers mention60 positive26 negative

Customers are mixed about the performance of the biometric monitor. Some mention it works flawlessly with their HTC 1 and fitness app iCardio, while others say that it often gives wildly inaccurate results and is unreliable.

"...sensor band is fairly comfortable, easy to put on, and works well after wetting the pads with water, even when worn overnight...." Read more

"...It works well with the polar app, but for some reason I cannot get it to sync with the Strava app..." Read more

"...It did pair with my iPhone 4S right away and works with mapmyrun so that is a positive." Read more

"...The problem got worse with time and the monitor became unreliable.I tried replacing the battery and this did not solve the problem...." Read more

30 customers mention21 positive9 negative

Customers find the biometric monitor easy to use. They mention it's simple to pair with apps and connects easily. Some say it'll connect quickly.

"...The sensor band is fairly comfortable, easy to put on, and works well after wetting the pads with water, even when worn overnight...." Read more

"...No fuss no trouble.I also bought some of that spectra 360 Gel to help the HRM strap detect your HR but it seems i didn't really need it...." Read more

"...Wahoo Fitness BluetoothI had to return due to finicky, wouldn't pick up heart rate for a long time...." Read more

"Works flawlessly with my HTC 1 and fitness app iCardio, is easy to set up and comfortable to wear; I cease noticing it after a few moments...." Read more

17 customers mention17 positive0 negative

Customers find the biometric monitor very comfortable and easy to wear. They also appreciate the soft adjustable strap.

"...The sensor band is fairly comfortable, easy to put on, and works well after wetting the pads with water, even when worn overnight...." Read more

"...After receiving it, i tried it on immediately. The soft adjustable strap is very comfortable, although on me it tends to slide down a bit on the back..." Read more

"...have already stated, the Zephyr HxM Smart is compact, its strap is comfortable, and its heart-rate datastream is dependable...." Read more

"...I will keep this review to product only.It is comfortable, fit well and did not slide out of position...." Read more

41 customers mention23 positive18 negative

Customers are mixed about the connectivity of the biometric monitor. Some mention that it syncs right up with bluetooth, and it automatically sync with their phone and apps. However, others say that it would not link up and work with their sports. It also fails to pair about 50% of the time, and does not always connect to Endomondo.

"...give it 5 flying stars because I can work out and be able to connect my wireless headphone...." Read more

"...But here's the real kicker: the connection problems are just as bad with this "supported" app...." Read more

"...to Android 4.3, they now have the necessary driver and work great with Bluetooth 4.0 gear...." Read more

"Item as shipped by the seller was defective with no bluetooth signal whatsoever (although the LED blinked),..." Read more

31 customers mention18 positive13 negative

Customers are mixed about the battery life of the biometric monitor. Some mention that it has an endless battery life, and the battery drain after workouts is hardly noticeable. They like that it comes with a spare battery. However, others say that it goes through a battery almost every week, and is horrible quality.

"...The monitor itself comes with a battery inside of it. Like one of those large flat watch batteries. It also comes with an extra one...." Read more

"...I worked at least 45-60mins 5 times a week and the battery died about 4weeks of used...." Read more

"...Plus, being a Bluetooth LE/Smart device, the HxM Smart has phenomenal battery life...." Read more

"...I'm worried that this third strap won't last long either.Therefore, I cannot recommend this heart rate monitor...." Read more

30 customers mention19 positive11 negative

Customers are mixed about the accuracy of the heart rate monitor. Some mention that it does a good job of monitoring your heart rate, while others say that it gets very inaccurate readings and does not consistently record your heart beat.

"...Heart rate values have been believable at all times - no absurdly low or absurdly high numbers...." Read more

"...Many of the chest straps for this model heart rate monitor are defective (I'm on my third strap in just over 2 months)...." Read more

"...HxM Smart is compact, its strap is comfortable, and its heart-rate datastream is dependable...." Read more

"...it functions without any issues and the readings seem accurate...." Read more

14 customers mention7 positive7 negative

Customers are mixed about the quality of the biometric monitor. Some mention it's an excellent product, great for HRV training, and reliable, while others say they've had a couple of quality issues, it'd be better to go with the Wahoo, and the quality is poor of the strap material.

"...In summary, great HRM. Linked up easily to my android 4.3 device, and the app that was BLE capable. And i've had no problems since then...." Read more

"...The actual monitor device seems fine, the strap is, well, crap." Read more

"...It's pretty accurate as well. So far no complaints, excellent product!" Read more

"Poor quality system from Day 1. The poor quality of the strap material should have been my first clue but I kept going...." Read more

11 customers mention7 positive4 negative

Customers are mixed about the appearance of the biometric monitor. Some mention it's pretty nifty, nice to see, and has a simple design. However, others say it'll replace the battery everyday and is not nearly as good as iCardio.

"THE GOOD:Long battery life, comfortable & simple design (I am 6' 2" 150#), low profile for wearing under clothes, easy to put on & take..." Read more

"...When it works, it works well. However, the experience with Android seems to be rather poor with this device...." Read more

"I have used this several times and its nice to see and be able to modify my workouts, to be more of a fat burning workout when they need to be...." Read more

"...It's design is pretty similar, but this one actually works. It's very easy to pair with apps on iPhone5...." Read more

Top reviews from the United States

MunDeyn
3.0 out of 5 stars Works very well but battery life isn't so....
Reviewed in the United States on May 7, 2014
Verified Purchase
It's this or the Polar H7. So i chose the Zephyr HxM, if it doesn't workout then I'll purhcase the Polar H7.
I'm happy that i got this. Reading the H7 on how it doesn't pair with a secondary bluetooth device (for ex: wireless headphone), well this works. I am able to connect the Zephyr HxM device and my JayBird Blubud X headphone.

My main app right now is Armour39. Also tried Endomondo and runtastic, all app mentioned worked flawlessly.

The next update for this review would be the battery life, which I'm unable to give it a review but for now I'll give it 5 flying stars because I can work out and be able to connect my wireless headphone.

Edit: So like I said I will update the review on the battery life... I will take off 2 stars for this because the battery life that came in with the device didn't last. I worked at least 45-60mins 5 times a week and the battery died about 4weeks of used. So i'm on my 2nd battery now, we'll see how long this will last.
2 people found this helpful
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fast_matt
5.0 out of 5 stars Simple, effective, works well with iPhone 4s
Reviewed in the United States on March 17, 2013
Verified Purchase
I bought this Zephyr hear rate monitor to get a better understanding of how many calories I was really burning doing different activities - primarily strength training, yoga, Pilates, and cycling.

I've had it for about a month now, paired with an iPhone 4s running the Cyclemeter and Digifit apps, and it's served me well so far.
The sensor has worked seamlessly with Digifit; no issues whatsoever. Cyclemeter has sometimes hiccuped and lost pair when I left the phone on the floor and ran out of range; that required deleting the sensor in Cyclemeter and re-pairing. Since discovering that, I've stuck to Digifit at the gym ($2.99 for the sensor package, or $7.99 for the Pro package).

The sensor band is fairly comfortable, easy to put on, and works well after wetting the pads with water, even when worn overnight.
The sensor is small and lightweight; I mainly notice it when lying flat on my stomach.
Heart rate values have been believable at all times - no absurdly low or absurdly high numbers.
The manufacturer claims a 150 hour battery life; at my current rate of use it will be 6 months before I can tell you if that's true but it's going strong at 30 hours or so.

Calculated calories burned seems a bit high in both apps, but that isn't the sensor's fault. Online calculators gave similar values based on average heart rate.
I compared the calculated caloric value from Digifit with an exercise bike that measured power output and found the app calculated 142 calories where the bike calculated 100, so I multiply the heart rate-based caloric value by 0.70 to provide a (hopefully!) more accurate number.
21 people found this helpful
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D. Harris
1.0 out of 5 stars Buyer Beware - Worked great for a while then problems began...
Reviewed in the United States on April 26, 2014
Verified Purchase
This review is for the Zephyr HxM Smart Heart Rate Monitor. I purchased it from the manufacturer, Zephyr Technology, on Amazon.com for $54.95 and Amazon fulfilled the order via "free" Amazon Prime 2-day shipping.

------updated review 07-Jul-2014-----------------------
After using this product for over 2 months, I am changing my previous 5-star review to just 1 star because of the problems I have encountered. I'm an experienced user who used to teach for the Red Cross (over 15 years) and am very familiar with heart rate monitors and how to use them. Every time I used this product, I consistently prepared my chest properly by moistening the skin under the electrical pads on the chest strap.

The monitor worked fine for the first couple of weeks then it began to indicate an erratic heart beat that would spike high. Instead of 145 bpm during exercise, it would sometimes falsely indicate over 200 bpm. The problem got worse with time and the monitor became unreliable.

I tried replacing the battery and this did not solve the problem. I carefully cleaned the chest strap with cool water as instructed and it didn't help. Finally, I contacted the manufacturer, Zephyr, for warranty service and they gave me an RMA number and I returned both the monitor and chest strap as requested.

They tested them and concluded that the chest strap had gone bad. They returned my monitor with a new chest strap. It worked okay for just two events and then it resorted to its former bad behavior of spiking high intermittently near the beginning and ending of a workout. This is the same behavior the first strap exhibited before it became unreliable much of the time.

I had previously purchased a spare chest strap (blue) which I had not used yet. So I tried it and the monitor began to work properly again. So far (after just a few days) the monitor is still working properly with the new chest strap.

In case it is helpful, I'll briefly describe my application: I'm an older guy chasing 60. I train for long-distance bicycle rides like "century rides" (100 miles in one day). My daily workouts range from 20 to 35 miles nonstop riding a road bike on smooth paved roads. Each workout takes from 90 to 120 minutes. I rest my forearms on aerobars so my torso is forward over my bike the entire time and does not move much. I ride in the early morning when the temperature is moderate (from 60 to 70°F) and I ride at a moderate speed (averaging from 15 to 18 mph for the entire workout). So I do not sweat much. With my torso relatively calm and only moderate sweating, the monitor should have a fairly easy time. Also, my smart phone is mounted on my handlebar stem and is never more than 12 inches from the monitor during a workout.

Conclusions:
Many of the chest straps for this model heart rate monitor are defective (I'm on my third strap in just over 2 months). My original strap stopped working properly and the replacement that Zephyr sent also stopped working properly. I had to purchase another strap (the same model from Zephyr but a different color) before the monitor would work reliably again. I'm worried that this third strap won't last long either.

Therefore, I cannot recommend this heart rate monitor. Until Zephyr replaces the chest straps with a new model that is reliable, you will be taking a gamble as to how long the monitor will work. It's a shame, because this could be an excellent product if it weren't for the bad chest straps.
------end of updated review----------------------------

------the original review follows-------------------------
This product is advertised for late-model iPhones and iPads which has confused a lot of buyers. It actually works very well with Android devices, too. All the Android device needs is Bluetooth 4.0 (the low-power or "smart" version of Bluetooth) and Android 4.3 or later. This is the only Zephyr heart rate monitor with Bluetooth 4.0. The other ones (like the one advertised for Android and Windows devices) only has a Bluetooth 3.0 transceiver and will consume battery power more rapidly.

The Galaxy Note II phone has the Bluetooth 4.0 transceiver, but it lacked the necessary driver since the phone shipped originally with Android 4.2. Since all Note II phones have been upgraded to Android 4.3, they now have the necessary driver and work great with Bluetooth 4.0 gear.

I don't regularly use Bluetooth so I keep it off most of the time to conserve my phone's battery. The way I setup and use the Zephyr HxM Heart Rate Monitor is like this:

1 - I typically begin with Bluetooth turned off and the heart monitor disconnected from the chest strap.
2 - Launch the Endomondo app, tap the menu icon (three small vertical squares at the right end of Endomondo's title bar), and select the "Settings" command.
3 - Tap the "Accessory Settings" command and stop.
4 - Put on the chest strap for the heart monitor. The heart monitor, itself, should not be attached to the chest strap yet. The strap should be as high as possible beneath your breasts and the two snaps should be centered on your chest.
5 - Get a finger wet and damping the two sensor pads just beyond each snap.
6 - Attach the heart monitor to the chest band via the two snaps. The snaps are metal and make the electrical connection between the sensor pads in the chest band and the heart monitor, itself. Connecting the heart monitor to the chest band automatically turns it on and puts in its "pairing" mode.
7 - Return to the Endomondo app and tap the "Bluetooth SMART Sensors" option at the top. Android will ask if you want to grant Endomondo permission to turn on Bluetooth. Tap the "Yes" button.
8 - If this is the first time you've used the heart monitor with your phone, tap the "Scan" button at the bottom to cause the phone to search for Bluetooth 4.0 devices. It should find "Zephyr HXM" followed by an I.D. number. Tap on it and it should connect (or pair) to the heart monitor. Once it does, the number that appears beside it is your heart rate in beats per minute (bpm). In the future you shouldn't need to use the "Scan" button---the Zephyr HxM will be listed and you just need to tap on it to create the connection. Note: It can take half a minute for the connection to be made so be patient.

I use Endomondo for cycling and have the main display configured to show my heart rate ("HR") as I do my daily workout. The Zephyr HxM Smart Heart Rate Monitor has worked flawlessly every time. It doesn't seem to miss a beat.

Since there is no on/off switch on the heart rate monitor, you need to disconnect it from the chest band. I also turn Bluetooth back off on my phone. After a few minutes of inactivity, the heart monitor powers down and goes into a kind of standby mode until the next time it is used.

The unit comes with two batteries. One is preinstalled from the factory so it is ready-to-use as soon as you receive it. The second battery is a spare. I found it very tricky to get the battery door open. It is easy enough to unscrew with a quarter. But the hard part is pulling it off because you don't have anything with which to grip. I had to use the quarter to jimmy it out.

I like this heart monitor a lot. The chest strap seems to stay in place very well. And the low-power feature of Bluetooth 4.0 should enable the battery to last a long time.

------updated review 07-Jul-2014-----------------------
See my update at the top of this review. I can no longer recommend this product because the chest straps are defective and do not last very long. Stay away from this model until Zephyr fixes the chest strap problem.
------end of updated review----------------------------
35 people found this helpful
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