1. About the product This product uses pressure water pulses to rotate 1600 times per minute, which can effectively remove 99% of the food residue remaining in the teeth and deep gums. This is an effect that traditional brushing cannot achieve. 2. 3 cleaning modes Dental floss has 3 modes: 'strong, standard, soft' and low noise design for your choice. It can also eliminate bad oral odors between teeth, massage the gums and promote blood circulation. 3. IPX7 waterproof design IPX7 waterproof design is used inside and outside to provide double protection. The clever design prevents leakage and can safely use dental floss in the bathroom shower. 4. 200ML detachable water tank This dental floss can provide sufficient, uninterrupted oral cleaning, and allows you to thoroughly clean the internal scale, which is impossible for ordinary oral irrigators.