OMAX Wrist Power Bank Battery Charger Adjustable Bracelet Recharger Battery with 1500 mAH Power case Charge All Smartphones OMAX Wrist Power Bank Battery Charger Adjustable Bracelet Recharger Battery with 1500 mAH Power case Charge All Smartphones Wrist recharger battery case .High quality Li-ion battery, over 500 times life cycle. can change the voltage 5V -11V.Quick charge there's a lot of value packed in this powerbank battery charger by Maze Exclusive. It's water resistant and has an IPX4 water resistant rating, so it's the best portable charger of its kind! Carry it anywhere you go! Wrist power bank use for iphone ,ipad, Samsung,HuaWei ,xiaoMi,LG,Microsoft,Nokia,MP3/MP4 /digital camera/GPS and so on Wrist power bank,can wear on our wrist Recharger power bank Single USB output, can charge USB device at any time