Charge up anywhere stay charged anywhere with this slim and lightweight power bank (a.K.A. Portable charger) that fits in your pocket or bag. 10,000 mah recharges a smartphone up to 3 times.* a universal usb-a 2.4 amp port delivers up to 5v to quickly and safely charge devices like smartwatches, fitness bands, headphones, speakers, action cameras, and bluetooth-enabled devices. A 5v 2.0 amp input allows the power bank to recharge quickly between uses. *charges iphone 7 (running ios10) up to 3 times on a single charge in internal testing. Multiple charges 10,000 mah can recharge a smartphone up to 3 times over, providing an additional 25 hours of call time or 21 hours of web browsing.* *charges iphone 7 (running ios10) up to 3 times on a single charge in internal testing. 5v 2.4a = fast charging