On sale! (normally $35) The Romoss Polymos 10 Air Dual Output 10000mAh Power Bank features new polymer batteries with high-density, high-capacity and a slim size. At only 14.8mm thick, the Polymos 10 Air has a USB 2.1A output port that delivers safe and stable current for mobile phones at a doubled speed and is fully compatible with Apple, Samsung, Huawei, Nokia, HTC, Google as well as other mobile and tablet devices.