2 X Contour Battery Charger 2 X AA High Capacity NI-MH 2 X USB Power Bank / Pack

Supplied With: 2 x AA NiMH Batteries. USB Output: DC 5v 1000mA for 1 USB, DC 5v 500mA for 2 USB. NiMH AA 2700mAh: 10.7 hrs. NiMH AA 2500mAh: 10.0 hrs.

eBay