SWIM MUSIC / Special MP3 for swimming

With our newest technologic goggles, listening to music under the water is no longer a dream.
You will enjoy the music with the Blue-tooth earphone and avoid water get into ears.
The special device will switch the power of swim into electricity.
The batteries can be fully charged with the motive power.

When you swim free style( high speed), it will play the song with airy rhythm.
If the speed is slow, it will play the soft music with canorous melodies.