" Material: Plastic + Electronic Components. Color: 7 Colors for Choose. Size: 90 mm * 30 mm * 22 mm. USB Power Bank 1x 18650 Battery Charger Box Quantity: 1 x DIY Power Bank Case Box. (Battery, USB Cable Are Not Included) Note: Please note this is a DIY Power Bank Case Kit,You are required to assemble them yourself,and the battery is not included ! Mobile Power sets of materials includes: power motherboard + supply enclosure. Instruction: 1.To charge digital devices: Simply use the matched USB cable to charge digital products. One end of the USB cable connect with the ""OUT"" port of the power bank, another end connect with the digital product with converted tip,it will start to charge. 2.To charge power bank : Use USB cable with Micro connector to charge power bank, the ""IN"" port is the charging port of power bank. You can charge power bank from adapter's USB or charging from computer's USB. 3.When LED is red that means power bank is charging. "