100%Brand new and high quality.Features:Provides extra backup power to all devices that support USB charging e.g. iPhone、 Samsung HTC Blackberry、 Android、 tablets、 MP3 players、 GPS units、 etcThis unit takes 2 replaceable protected 18650 li-ion batteries to power and recharge your USB devicesPower bank can be recharged via micro USB port with LED capacity indicatorSupport recovery of over-discharging batteryMatch-free for 18650 batteries (Max. hold 2pcs 18650 batteries)2 section of battery is working independentlyPerformance Parameter:Input: 5VOutput: 5VCharging Cut-off Voltage: 4.2VDischarging Cut-off Voltage: 3VBattery: Suitable for 2x 18650 Li-ion battery(not included)Size: approx. 9.3x 4.5 x 2.2cmSecurity:Using Li-ion battery protection ICCharging management protectionMCU monitoring protectionBattery reverse protectionColor: White with GreyBattery is not included