Portable Mobile Power Supply Module. Supports 3 USB cables. Hold down the button after standby, LED digital display power supply. LED digital screen shows current battery power when charging. When discharging, the LED digital screen displays the current power, and the display saves about 30 seconds (double-click button to restore the display).After charging and discharging, the system will provide accurate battery instructions. Specifications: Material: ABS Size: 65x25x5mm/2.56x0.98x0.2inch colour:green Package Contents: 2 x Battery Charger Board Only the above package content, other products are not included. Note: Light 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. When discharging, the LED digital screen displays the current power, and the display saves about (double-click button to restore the display).After charging and discharging, the system will provide accurate battery instructions. LED digital screen shows current battery power when charging. Portable Mobile Power Supply Module. Hold down the button after standby, LED digital display power supply. Supports 3 USB cables.