Functional descriptions: 1:  Lithium ion battery 3.7V 500mAh     4700rpm motor 2：IPX7 class waterproof 3：USB5V cable charger  charging time:75minutes  working time 90minutes 4：Noise＜55DBA 5:  with acceleration shift,adapt to different hair types 6：Inteligent constant speed， cutter head will not slow down with the drop of voltage 7.Smart ring shaped indicator light,red light breathes when charging,blue light breathes when it's fully charged,blue light flashes when accelerates 8.：Special ceramic cutter head for baby is 3 times sharper  than common manufacturers(refer to compared vedio of PHILIP) 9.The attachment includes USB charging cable,brush,oil bottle,powder puff,3-6mm limiting comb,9-12mm limiting comb,thinning comb with oblique tooth 10：Packing: standard blister color box