Feture:3.7V 900mAh Li-ion Battery For Original SJ4000/SJ4000 WIFI action cameraRechargeable Lithium-Ion BatteryBattery Capacity: 900 mAhCompatible with Original SJCAM SJ4000/SJ4000 WIFI/SJ5000/SJ5000WIFI/SJ5000 Plus/M10/M10 WIFIUse As a Spare or Replacement BatterySize is 33*28*10.8mmPackage:1 x Original SJ4000/SJ4000 WIFI Battery