It is a transmitter+ a receiver swim training gadget
with bone conduction headphone, solves the communication problem
between swimmer and coach during training. The Bone Conduction
headphone provides the best quality sound, a stylish design, and
is our most popular product. It carries an IPx10 waterproof rating
and is available in several stunning colors.
It is astounded for deaf at the difference in sound from using these headphones.
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