Features: 10000mAh capacity external battery with unique intelligent power indicator, accurately shows the power level left. Mini and portable design for conveniently carrying with. Dual USB output interface, safe and fast charging your mobile device, 2.1A high-speed output. With a micro USB cable, connect with your PC USB port for charging the battery power. Constant voltage and current-limiting, short-circuit protection for output. Must have on your outdoor travel. Widely used to charge for your phones, tablet, MP3, MP4, PSP, GPS, game device, camera and many more. Adopts the advanced plating technology, wearable and durable, gives you a smooth and comfortable hand feeling.