Input voltage: 4.5V-5.5V., Battery Charge : 4.2V @ 1000mA, Dimension: 25 x 19 x 10 (LxWxH)mm., Out+ and Out- pins for using the battery power, Micro USB Input, Current Limitation on Output pins, Soft-start limits inrush current, Programmable charge current upto 1000mA by changing value of resistor R3, The red LED indicates charging in progress, green LED indicates charging has finished.In The BoxPack of 1,Model NumberTP4056 Battery Charging Module with Protection,TypeMiscellaneous,ROHS CompliantDimensionsWidth1.9 cm,Height1 cm,Weight3,