Waterproof, Dustproof, Shockproof: Custom made for a life of adventure with waterproof, dustproof (IP66 rating) and shockproof design; this power bank is your lifeline when things get rough. iSmart Technology: Exclusive iSmart technology detects and delivers the optimal charging current of your device. 3.4A Dual Output: Dual output of 2.4A and 1A charge your smartphone and tablet at the same time at the ideal speed; 2A input shortens the power bank recharge time by half when compared to traditional 1A input. Whopping Capacity: Packing a whopping 10050mAh capacity, it charges your iPhone 6S over 3 times, Galaxy S6 2.5 times and an iPad Mini once before needing another recharge. Always Safe: Built-in short-circuit, over-charge, and over-heat protection automatically shuts the power bank down in the unlikely situation it detects a short circuit or input overload.