The 6000 mAh Portable Power Pack can recharge your GoPro 4x on the go. Dual 1.5 amp USB ports fully recharge two GoPros simultaneously in 2 hours and can be used on other devices. Tether it to your camera to provide endurance power for extended shooting. Its pocket-sized design makes it ideal for off-the-grid adventures. The Box Contains Portable Power Pack, Micro-USB Cable and Mini-USB Cable.