Get the Best - Your Phone, Your App, No Subscriptions - HxM BT Heart Rate Monitor - Android - Windows Phone 8 - Bluetooth

Named the #3 best Health and Fitness Accessory has named the Zephyr HxM heart rate monitor the #3 best Health and Fitness Accessory for Smartphones. See their review here.

Works with both Android and Windows Phone 8*

HxM BT in package

Zephyr’s API has already led to dozens of apps for Android phones – and it is also compatible with Windows Phone 8*. All while giving you the Bluetooth connectivity to track your heart rate, speed, distance and intensity level without complicated pairing.

Comfort for all-day performance

Smart Fabric is conductive fabric that provides market-leading comfort and accuracy. It is woven onto a soft, elastic, adjustable (up to 40 inches) Machine Washable strap worn around the chest. It is covered by a 12-month limited warranty from defects and the strap itself is replaceable.

Your phone, your app…no subscriptions!

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 including: Endomondo, Strava, SportsTracker, Runtastic, and more!

Workout smarter

Physiologists and fitness trainers recommend working out within certain heart rate zones to achieve goals such as weight loss or cardiovascular improvement. You no longer have to hold on to dirty handle bars on treadmills because the HxM continuously monitors you for faster feedback. With Zephyr, you can Measure Life…Anywhere!

Compatible with Android   Windows Phone   Bluetooth

* Check with your app developer to see if it is compatible with the HxM BT.
See some of the apps you can use with the HxM BT.


HxM BT Brochure PDF pdf
HxM BT User Guide PDF pdf
HxM BT API Guide PDF pdf

Available at: Zephyr Webstore
International Customers  

Prices valid for U.S. Customers Only


  • Uses Bluetooth to provide heart rate, RR Interval, speed & distance to your Android and Windows Phone 8 devices
  • Machine Washable strap that offers both comfort and accuracy
  • Long transmission range (~10m)
  • Water Resistant up to 1m
  • Supports dozens of Apps with no subscriptions required!


  • Heart Rate
  • R-R Interval
  • Speed
  • Distance


HR Range: 25 – 240 BPM
Battery Type: Rechargeable Lithium Polymer
Battery Life: 26 Hours per charge
Transmit Range: 10m
Frequency: 2.4 – 2.4835GHz
Garment Washes: 50
Operating Limits:  
     Temperature: -10 – 50°C
     Humidity: 5 – 95%

For Developers

Download the HxM BT SDK

This bundled package is intended as a toolkit for implementing an API to enable communications with a Zephyr Bluetooth Heart Rate / Speed & Distance Monitor (HxM BT) and provides both PC and Android resources for connecting to the device to receive live data.

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