Zephyr HxM

Product Description

Zephyr Hxm Delivers Heart Rate Speed Distance To Android , Sfo Medical Real Time Handheld Portable Ecg M Itor , Polar Ft40m Mens Black Heart Rate M Itor , Oreg Scientific Se833 Pc Download Heart Rate M Itor , Polar Fs2c Heart Rate M Itor , Suunto M5 Mens Heart Rate M Itor , N In Go2 Led Achieve Fingertip Pulse Oximeter , Dev Medical 300c1 Fingertip Pulse Oximeter , T3c Heart Rate M Itor Black Polished , Mens Shape Heart Rate Watch Black , The Zephyr HxM BT is a fitness-tracking device designed for use with most smartphones. It combines Zephyr's Smart Fabric™ heart rate sensor technology, movement sensors, and Bluetooth wireless connectivity on a chest strap for athletes who live on the cutting edge of technology. Why carry multiple devices such as foot pods, music players, and bulky GPS watches when your phone can do it all for you? Paired with the HxM, your phone can track your exercise intensity level, speed, and distance while playing your music, tracking your GPS location, and providing calling services. Strap-on 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) strap that is worn under the shirt around the sternum. The Bluetooth 2.0 transmitter module has 26-hour battery life and is snap-detachable. This allows the HxM to be easily recharged by the included USB cradle and the chest strap is machine-washable. 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.With an open communication design, the HxM provides unparalleled flexibility with the phones and applications you use. We don't support iPhone, sorry. Currently available apps include Endomondo and SportsTracker Pro for Android, Runtastic Pro for BlackBerry, eCoach for Nokia, and Run GPS for Windows Mobile. PLEASE CONFIRM your preferred app supports the HxM before purchasing!Android version 2.0 or later required.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!
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This review is from: Zephyr HxM - Delivers Heart Rate, Speed & Distance to Android and BlackBerry Smartphones
Everything about this heart rate monitor seems so perfect - from the soft comfortable fabric strap, the great battery life, the Bluetooth connectivity and range, to the compatibility with lots of great Android apps. I previously thought that the heart rate detection was inaccurate, because I found that it worked fine if you stay very still, but if you are moving around at all (e.g. using an elliptical, or jogging) the sensor will confuse the jogging motion for the heart rate. However, I have now found that I can solve that problem completely by prewetting the sensors with a little bit of water. I'm guessing this is a particular problem for me because I live in an air conditioned building, so my skin is usually very dry.

I've been analyzing the packets the device sends over Bluetooth, and have found out that, contrary to my previous belief, in addition to the average heart rate, the device transmits the actual RR intervals in milliseconds. This means that with the right software, the device could easily be used to analyze heart rate variability, and that you aren't limited to the heart rate averaging algorithm that the device itself uses (which seems to be pretty solid anyway though).

I also love that they include a USB charging cradle. Much better than the Polar heart rate monitors with the expensive alkaline batteries that you have to replace every few weeks.

So in summary - a great piece of kit. My only ask is that Zephyr makes the API available publicly for free; I think that would boost developer adoption and we'd see a lot of Zephyr HxM apps on the market.