Moves according to sound. High Quality Craftsmanship. Make yourself cool and flashing in group. Nice gift for your family and friends. Daily waterproof.
(Note: Rotate the wheel under the mask, then turn on the switch and voice your sound, the mask will glow.The higher sensitivity, the better induction effect it is. )
Material: polyester Light size: 20x12cm(W*L) Battery: 2x AAA battery (not included) Light switch type: voice control