Thin Screwdriver Box 62 Pieces Integrated Works By Charging Battery Capacity : 330 Mah - Rechargeable Lithium Battery Rotates About 200 Rpm It Works Through Charging And Rotates When Placed On The Screw To Remove Or Install It To Turn On The Screwdriver, You Can Press The Up Arrow. To Stop, You Can Press The Down Arrow The Screwdriver Lights Up Immediately After Use To Enable Visibility Clearly When Removing Or Installing Screws For Small And Precision Devices Charging Time: 50 Minutes, If The Flashing Color In The Screwdriver Is White, It Needs To Be Charged And Still Charged, But If It Is Green, The Charging Is Complete And You Can Use It Voltage : 3.7V Available In Light Grey