This 2 piece device allows you to carry the heavier battery in your pack, and clip the control module on your pack.Power gauge with LED indicator & auto shut-off.Standard USB & Mini USB ports. Battery Storage: 9000mAh; Output: 2000mA/5VBattery Dims: 4.13"x3.75"x1"; Control Module: 4"x2"x.63"Total Weight: 12.7oz
