Equipped with high quality build-in intelligent microchips,multi-protection system improve both of the charging and discharging efficiency.Easily to handle abnormal conditions like over charging,over discharging,short circuit,protect your devices and the power bank perfectly. Hidden LED column obvious lets you know just how much juice is left. 1. Capacity:20000mAh 2. Input: Micro USB 5V/2A 3. Output: USB1 5V/2.4A USB2 5V/1A 4. Dimensions: 5.6x2.8x1.1 inch 5. Weight :15.99oz 6. Color : Black Product Features: 1. High efficiency rate, charges an iPhone 3-5 times, or comes with enough power for 3 charges to most other large capacity smart phone like Galaxy S4. 2. Unique HIGH INPUT design, 2A adapter for fastest charging time, twice as fast than 1A input. With the least amount of time fully charging your device. 3. Dual-port and intelligent circuit chip,constructed with built-in intelligent microchips which provide multiple protection,dual-port USB output charge two devices simultaneous with full-speed charges. 4. LED indicators, show the remaining power of charging and discharging status clearly. Compatible Models: Universal -- iPhone 6s,6s Plus,6, 6 Plus, 5C, 5S, 5, 4S, 4,(please use the original Cable from Apple) -- Samsung Galaxy S7,S6,S5,S4,S3,Note 4,3,2,Samsung Galaxy Tab 2 3 4, -- HTC One / One Mini, Nokia Lumia 925, Huawei G525 Y300, LG Optimus 4X HD I7 I9, LG G3, Amazon Fire Phone, Sony Xperia, Blackberry, Motorola -- iPad Air 5 4 3 2, iPad mini (please use the original Cable from Apple) -- Acer B1, Google Nexus 7 10, Asus MeMO Pad HD 7 and more Package Include: 1 x 20000mAh 2 USB Power Bank 1 x Micro USB Cable 1 x User Manual-