Slipping easily into your pocket, pack, or purse, the Goal Zero Flip 10 Portable Battery holds a single charge for your phone, fitness tracker, or other small electronic device. Battery can either be charged via the included micro-USB cable or by a solar panel (sold separately). Charges in 3 hr. via micro-USB and 2.5-5 hr. via solar panel. Small size and light weight make it extremely portable. Weighs 2.5 oz.. Dimensions: 3.63 x 0.75 x 0.75 in. 847974003374 20715200012 219