Direct Input: The input is designed with the Micro-USB female, which allows you to directly input with your phone charger and recharge your lithium battery. The placement still sustains the Input Voltage wiring pads for your convenient DIY. Specifications: It possesses an Input Voltage of 5V, a Charging Cut-off Voltage of 4.2V 1%, charge current:and a Maximum charge current of 1000mA. Protection Features: The module safeguards your battery from over-discharge at a voltage of 2.5V and overcurrent at current of 3A. Compact Size: The board size is 2.6 x 1.8CM, making it portable and handy. color: blue Material: PCB Package Contents: 50 x Micro-interface module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.