See it here:
http://pevly.com/eken-h9-review/
Buy battery here:
http://www.gearbest.com/mobile-power-bank/pp_138665.html?utm_source=shareasale&utm_medium=shareasale&utm_campaign=shareasale
Battery is 900mAh Li - ion Battery for SJCAM SJ5000 SJ5000+ M10 SJ4000 - BLACK
Camera not impressive but works. It is worthless for 4k but does good 1080,