Tag Archives: battery-free

The First Battery-Free, Powered Toothbrush

Be – The First Bio-degradable And Battery-Free Toothbrush

An electric toothbrush is a battery-powered or rechargeable toothbrush that makes rapid, automatic bristle motions either back-and-forth oscillation or rotation-oscillation in order to clean teeth. There are plenty of electric toothbrushes on the market. Most of them required not so eco-friendly power source. The Be