This is the summary of consumer reviews for Zephyr HxM Bluetooth Wireless Heart Rate Sensor for Android and Windows Phone 8. The BoolPool rating for this product is Very Good, with 4.20 stars, and the price range is $84.95.

The Zephyr HxM BT is the first fitness-tracking device that uses Bluetooth to provide heart rate, speed, and distance to your Android or Windows Phone 8 device. It combines the Smart Fabric, heart rate sensor technology, movement sensors, and Bluetooth connectivity on a chest strap for sport-lovers and professionals. Paired with the HxM, your phone can track exercise intensity level, speed, and distance while playing your music, tracking your GPS location, and providing calling services.

This Zephyr HRM is woven onto a soft, elastic, adjustable machine washable strap worn around the chest. The Bluetooth 2.0 module has 26-hour battery life per charge and is snap-detachable letting you recharge the HxM on the USB charger. It is supported by dozens of Android apps including: Endomondo, Strava, SportsTrackerLive, Runtastic, Run.GPS and more. Users love the fact that this heart rate monitor has a rechargeable battery and seems to hold connections brilliantly when connected to a Bluetooth device. However, some reviewers have mentioned that the battery loses its charge even when it is idle. Most reviews have pointed out, while that the fabric strap is comfortable it is difficult to keep it wet enough to keep the heart rate monitor reading properly for longer exercise routines.

On the whole theZephyr HxM BT is a good and necessary device that allows you to continuously monitor for a faster feedback. It has a built-in battery which is very useful and nice comfortable fabric strap, offering reasonably good battery life with Bluetooth connectivity and range that is compatible with lots of great Android apps.