This video is cosist of comaprison test between the Rumble Z vibrating earphone and the general earphone. Rumble Z uses world-wide patented "Sonic-Vibe EX" Technology which creates vibration at the low & middle tone. And the vibration also sends the sound through your skin and bone.
As you can see, the general earphone shakes your ear drum to make sound and it will eventually damage your ear drum when listening at high volume. But the Rumble Z vibrates and transmit the sound through your skin and bone + speaker provides less pressure to your ear drum with the 3D vibrating feeling and barely shakes yor ear drum if you compare with the general earphones out there.
Another clip shows the water proof testing.
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