Dual USB Battery Travel Charger for GoPro Hero 4 (AHDBT-401)
Taking a photography with GoPro Hero3 can be longer, about twice as long as normal use, by this battery;
Constant current and constant voltage protection;
Battery heat management;
Trickle charging;
Automatic recharge;
Compatible battery models: AHDBT-401;
Note: The battery is not included;
Input Voltage: DC 5.0V;
Output Power: DC 4.35V / 800mA (x2);
Size: 57mm x 45mm x 21mm.