High capacity 20,000mAh, provides powerful and stable power supply for each port. Equipped with dual USB ports to fast charge two digital devices simultaneously.Features an LG Lithium-Polymer battery 5v 3.1A, Dual-port usb charger, it is universal fits for iPhone 6 5S/5/4S/4, iPad, iPod, Samsung devices, HTC phones, tablet PCs, digital cameras, game consoles and MP3/MP4 players, etc. Safe to use. Supports over-charged, over-discharged, over-voltage, over-current and short circuit protection, perfectly protects your digital devices from charging accident. Slim Power Bank, ultra-slim design with a hard plastic & aluminum alloy construction, solid and portable. Convenient to carry at anytime and anywhere.