... Solar power bank Specification:*Single USB output power bank, full aluminum case, under the cover*Polymer battery capacity: 4000mAh/3.7V,*Solar panel: 5.5V ... 70mA/0.055W*Type: polymer battery and solar panels*4 LED battery indicator and a solar charging display, an external ... 1PCS universal conversion plug sets, power adapter 1PCS Aluminum alloy 4000Mah Single USB Solar power bank