Wecele S-1550 5200mAh Ultra Compact Portable Charger-External Battery Power Bank with High-Speed Charging Technology for Tablets and Smartphones(Red) Charge Faster: 2.1A input and 2.1A output, charges your devices fast; detects your device to deliver its fastest possible charge speed up to 2 amps. Does not support Qualcomm Quick Charge. Incredibly Compact: With size (4.5 x2.5 x1in,4.4oz) it fits perfectly in your palm or pocket; Recharges in 3.5-4 hours with a 2A adapter(included) and the micro USB cable(included). Unique Design: The top ring indicates the level of power also doubles as a loop for a strap or carabiner hook; the cover is rugged textured material, it's comfortable to hold it and not slippery, also anti-fingerprint. 6 LED Power Level Indicator Lights: 6 different LED ring around the top changes colors to indicate different level of power supply. (Green Indicates 80-100%, Cyan Indicates 61-80%, Blue indicates 41-60%,Purple Indicates 21-40%, Yellow Indicates 10-20% and Red Indicates Less Than 10%). What You Get: 1xWecele S-1550 Portable Charger External Battery Power Bank, 1 x2A Plug in Transformer, 1 micro USB Charging Cable,1 welcome Guide and our friendly customer service.