KingMa Double Charger 2Pcs 1200mAh AHDBT-401 Battery and AHDBT-401 Battery Cover Case For Gopro 3 Plus SJ4000<br>Specification of USB Dual Charger :<br>Brand Name: KingMaInput: 5V 2AOutput: 4.2V 800mA x 2 (800mA x1)LED Charger Indicator:Red Light: needs chargingGreen Light: charging is completeSize: 55 x 42 x 22mmCompatible With Battery Model: Gopro AHDBT-401Compatible With Digital Model: Gopro HD HERO4 Silver GoPro HD HERO4 Black<br>Note:  Not compatible with the GoPro HERO， HERO3 or HERO2 cameras.<br>Feature of USB Dual Charger:<br>Safe circuit board protectionCan simultaneously charge two batteriesCan power the dual charger with any USB power source including your computerMini USB dual charger can fully charge 1 or 2 batteries at a time within a couple hours<br>Specification of AHDBT401 Li-ion Battery:<br>Fit For: Hero4Capacity:1200mAhRechargeable:YesModel Number:AHDBT401Li-ion Battery Voltage: 3.8V<br>Specification of Gopro Battery Cover Case<br>Color: Clear GreyMaterial: PlasticHelps you differentiate your battery from your friends so they don't get mixed upkeeping your battery organised so you can be sure they won't get lost or misplaced.This battery cover case also helps protect your battery from dust， water and any general wear and tearCompatible Model: For Gopro 3+\/ SJ4000Size For: Gopro 3+\/ SJ4000: Approx. 4.2 x 3.4 x 1.7cm\/ 1.65 x 1.3 x 0.67 incn\/ Gopro 4\/ Xiaomi Yi: Approx. 3.9 x 4.6 x 1.4cm\/ 1.5 x 1.8 x 0.55 inch<br>Package included:<br>2 x 1200mAh 3.8V AHDBT-401 Li-ion Battery1 x Protective Storage Battery Cover Case1 x USB Dual Charger1 x USB Cable<br>Detail pictures: