With the Sandberg Outdoor Power Bank 10400 mAh in your luggage you won't run out of power on your phone or other portable devices when you're far away from a socket. You get up to 4 charging cycles for a typical smartphone and with its solid and waterproof packaging it keeps going even under harsh conditions. It can charge up to two devices simultaneously, for example a smartphone and a tablet. Charging status can be read easily with the lights on top.