The Sports Tracker HRM2 connects to Android, iPhone and Windows Phone 8 devices via the award-winning Sports Tracker app and helps you achieve your fitness goals. Whether you’re training for your next triathlon or weekly circuit race, or simply want to lose weight and get stronger – heart rate training is the most efficient method available. The HRM2’s lightweight, rechargeable battery lasts up to 40 hours, so you’ll rarely need to recharge it. Extended Bluetooth range for situations where you need to be more than a few metres away from your smartphone. High-quality fabric wristband and easy connection to the Sports Tracker app.