Scosche Rhythm24 Waterproof Armband Heart Rate Monitor - Black

This next-generation, multi-mode waterproof armband heart rate health and fitness device is highly accurate, packed with outstanding features and very comfortable to wear. So you can ditch those chest strap devices and now workout longer, in more places and in maximum comfort. Rhythm24 optically measures blood flow and body movement to ensure the most accurate data possible. With its dual-mode radio you can simultaneously transmit your heart rate to multiple ANT+ displays (Garmin® watches, cycling computers, fitness equipment and more) and to your favorite Bluetooth® Smart enabled watch or smartphone app.