Zephyr HxM Smart Heart Rate Monitor for iPhone 4S, iPad (3rd Gen) & iPhone 5 with Bluetooth Low-Energy (4.0)
From the Leader in Physiological MonitoringThe 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, & Bluetooth Smart connectivity on a chest strap for athletes who live on the cutting edge of technology.Built to lastUsing 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.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, adjustableMachine Washablestrap 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 including: Armour39, Endomondo (iOS only), Strava (iOS only),  SportsTracker, Runtastic, Wahoo Fitness 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!*Android users should visit the Zephyr website for a list of apps that support  HxM Smart before buying