3x AHDBT-401 Battery For GoPro HERO 4 Black and Silver + USB Dual Port Charger With high-tech Japanese cells, rechargeable Li-ion batteries for longer battery life, equal or exceed OEM battery Simultaneous Charging: The only GoPro battery charger that lets you charge two GoPro Batteries at the same time. Compatible with GoPro HERO4 and GoPro AHDBT-401, AHBBP-401 Camera 1 Year Replacement Warranty Package Include: 3 x Battery AHDBT-401 AHBBP-401 For GoPro HERO4 Hero 4 Camera, 1 x Dual USB Port Charger, 1 x USB Charging Cable