The Swimmer's Talking Heart Rate Monitor

This waterproof heart rate monitor speaks pulse readings into your ear as you swim, eliminating the need to stop and look at a display. The device's infrared sensor clips to your earlobe and monitors light pulses on the skin caused by capillary blood flow. It converts the pulses into beats-per-minute (BPM) and uses bone conduction technology to transmit clearly spoken heart rate readings through your temple bone to the inner ear. As unobtrusive as a Bluetooth earpiece, the heart rate monitor attaches to a goggle strap and does not rely on chest or wrist straps, ensuring it won't inhibit swim strokes. You can set it to automatically relay readings from 20 seconds to five minutes apart, or you can receive immediate readings with the touch of a button. Operates for eight hours after a three-hour charge via the built-in USB plug. 3 1/2" L x 1 1/2" W x 1/2" D. (1 oz.)