Gaoge V05 Universal Dual USB "20000mAh" External Li-ion Battery Charger Power Bank - Golden Yellow
With no load output auto OFF within five seconds; 4-LED indicators: lighting after full charging; Power: 5% / 10% / 25% / 25% / 50% / 75% / 100%; Key function: short press for power detection and long press for one second for power ON / OFF; Protection: Charging / Over-discharging / Over-current / Short-circuit / Light-load protection; Support NDS PSP Nokia IPHONE Philips and other cell phones as well as MP3 MP4 and other digital products; High converting efficiency up to 85%~97%.