IWO P12 2400mAh Power Bank with LED Light Lanyard (Yellow) Lightweight and streamline finger fashionable design fits easily into any pocket or bag with higher density cells and efficiency.A 1W LED Light Prompt for camping and travelling.Emergency Charge available. High quality Samsung Battery Cells Inside, Samsung Grade A 18650 battery cells. It passed the most strict safety certification, UL 1624. Safety is the first priority for battery products. Texas Instrument Battery Management IC. Nine levels of protection. Up to 93% energy conversion rate. Low heat generation.High quality lithium polymer battery, more than 500 cycle life times. Compatible with Most popular smart phones from Apple, Samsung, Google, HTC, Nokia, LG and so on. Built-in figure LED indicator, easy to know the remaining capacity.