Quick Details Place of Origin: Guangdong, China (Mainland) Brand Name: Genixgreen slim mobile charger credit card powerbank Model Number: Genixgreen BMW-CB050 Dimension: 116.5*66.5*8.5mm Weight: 166g slim mobile charger credit card powerbank Capacity: 4000mah slim mobile charger credit card powerbank, 4000mah Outport: DC5.3±0.3V Max 1000mA Input: D.C5.0--6.0 MAX1000MA Socket Type: USB Color: Black, Blue, Brown brand: Genixgreen color: customized recycle time: more than 500times power efficiency: more than 85% Shell material: aluminum + ABS shell over charge protection: yes over discharge protection: yes over current protection: yes over voltage protection: yes