Powerextra Multifunctional Dual Charger for GoPro HERO4 and GoPro AHDBT-401, AHBBP-401,HERO3+, HERO3 GoPro AHDBT-201, AHDBT-301, AHDBT-302, AHBBP-301, ACARC-001, AWALC-001 Dual USB Charger Compatible With: GoPro AHDBT-201, GoPro AHDBT-301, AHDBT-302, GoPro HD HERO3/HERO3+ GoPro HERO4 and GoPro AHDBT-401, AHBBP-401 Charges two GoPro 3 or GoPro 4 camera batteries at the same time The charger also could charger one gopro 3 battery and one gopro 4 battery at the same time Powerextra Products are CE certified, tested by manufacturer to match OEM products. 30 days 100% money back and 1 year limited warranty.Please feel free to contact us!