The SJCAM C300 Pocket looks identical to the C200 but it has a 3 hour battery life at 1080p@ 30FPS (90 mins at “4K”*) and comes with a 10m IPX8 Perspex waterproof case. There is also an extended battery available which clips to the camera base but unfortunately it isn’t waterproof.
The C300 also works with the remote wrist control.
* Note that the specs claim the camera is capable of 4K recording but the chipset won’t allow it – so the 4K recording is actually 1080p upscaled to produce a 4K image but a lower resolution result.
It does come supplied with a cable for an external power supply via the waterproof USB-C socket in the base of the camera but the male plug on the other end is USB – A. I have been unable to find an IPX8 seawater-proof power pack with a waterproof female USB-A Socket. You could put the power supply in an external waterproof case but you would need a way to make the cable run to the camera waterproof.
