Functional descriptions： 1:2X600Mah NI-MH battery 2.4V 4700rpm motor 2：IPX7class waterproof 3：USB5V cable charger charging time: 5 hours working time: 1 hour 4：Noise＜55DBA 5：Special ceramic cutter head for baby is 3 times sharper  than common manufacturers(refer to compared vedio of PHILIP) 6:The attachment includes USB charging cable,brush,oil bottle,powder puff,3-6mm limiting comb,9-12mm limiting comb,thinning comb with oblique tooth 7：Packing: standard blister color box