Description: Dual slot design, charger two batteries simultaneously Mini size, convenient to carry High definition LCD displays real time charging status Features USB output charging Integrated intelligent power management system Intelligently detects input power Intelligently distributes charging power Priority Mode offers either battery or USB charging following users ’ preferences Automatically stops charging when batteries are fully charged Features over-charge prevention to protect batteries Enables data transfer via USB cable Rear hollow design for receiving the USB plug Constructed from fire retardant materials Designed for optimal heat dissipation Specification: Input: 5V 1-2A 10W Output: 4.2V 0.6A 2.5W Fit for Gopro Hero 4 battery Size: Approx. 83*52*22mm Material: ABS Color: Black Package Includes: 1x Battery Charger for Gopro Hero 4 (Battery not included) 1x USB Cable