1.Super Sonic toothbrush
2.Dupont nylon brush,
3. 2 speed, 30000times per minute and 26000times /minute
4.30 second remind, 2minutes shut off automatically
5. Full charge 10 hours can use 5days.(twic of 2minutes one day.)
6.Waterproof IPX7
7.Toothbrush size:184x17mm
8. weight:43g.