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Audible heart rate announced while you swim
Infrared sensor technology picks up heart rate through your earlobe
Bone conduction audio verbally conveys your heart rate through your jawbone into your inner ear, eliminating the need for ear buds
Attachment clip easily slides onto a goggle strap
Lithium-ion battery recharges through a USB port and provides 8-plus hours of use
Instruction booklet and small USB extension included