Functional descriptions: Battery:Built-in 450mAh polymer lithium battery USB cable:5V 1A 2*28AWG 30CM Micro USB Motor:F-280 3.7Vã6000±10% rpmï¼No loadï¼ Knife tooth /foil:3Cr13 stainless steel Charging time:Charging⤠2hours Discharging time:â¥1hour Charger power:â¥5W Standard voltage:3.7 Charging currentâ¤500mA Quiescent current:ï¼20uA Indicator light:the indicator light turns red during charging,and then turns green when itâs fully charged Machine size:192*70*75mm Material:ABS,PC,3Cr13 Stainless Steel installed Packing:standard color box Package attachment:general instructions,small brush,special USB charging cable,2pcs sticky paper tube,after-sales service card,etc.