Specification:
<br />
<br />Voltage: 3.8V
<br />Capacity: 1160mAh
<br />Input: 5V 2A
<br />Output: 4.2V 800mA x 2 (800mA x 1)
<br />Use for :  Hero 4 Black , Hero 4 Silver, Hero 4 and  AHDBT-401
<br />Size: 55 x 42 x 22mm
<br />
<br />Compatible With
<br />
<br />Battery Models:  AHDBT-401
<br />Digital Models:  HD HERO4 Silver /  HD HERO4 Black
<br />
<br />Kindly Note:
<br />
<br />1. Not compatible with the  HERO, HERO3 or HERO2 cameras.
<br />2. You can power the dual charger with any USB power source including your computer.
<br />3. LED Charger Indicator - Red light: needs charging, Green light: charging is complete.
<br />
<br />Package included:
<br />
<br />2 x AHDBT-401 3.8V 1160MAH Battery for 
<br />1 x USB Dual Charger
<br />1 x USB Cable