Enduro for HERO13 Black is the newest ultra-high performance battery that you can use as a replacement or spare for the one that came with your GoPro. Key Feature: - The 1900 mAh capacity gets your HERO13 Black over 3 hours of 1080p30 runtime or over 1.5 hours when recording 4K30 or 5.3K30 video. What's in the Box: - 1x Enduro for HERO13 Black