SMS Biosport Earphones with Heart Rate Monitor Remote Water resistant
Lose the Strap - Now you can track your heart rate while listening to yourfavorite tracks without an uncomfortable strap ormultiple devices.
Dive In - SMS Audio BioSport Earbuds are IPX4 rated forresistance to sweat and water.
Throw out the Batteries - The 3.5 mm gold-plated audio jack delivers all the poweryou'll ever need for biometric monitoring. There isnothing to replace or recharge.
Track Results - SMS Audio BioSport Earbuds are compatible with majorfitness apps, so you can stay in shape and on track. Such as Run Keeper