TELESIN Dual Slots Battery Charger USB Charging Double Charger for Gopro Hero 4

Features: 

Brand: TELESIN
Dual slot design, you can charge 2 batteries at the same time
Smart LED indicator shows the charging status
Automatic constant current control, prevents battery from overcharging, short circuit, and electronic shock
Compatible for Gopro Hero 4 Battery
Input : 5V 2A
Output: 4.3V 800mA(X2)

Package Included: 

1 x TELESIN Dual Battery Charger
1 x USB Cable

Detail Pictures: