The same cube form factor we are used to, meaning the 3S should fit most of your existing mounts, particularly if they are flexible or use a strap.
60 FPS recording in 1080P means you can get nice smooth slow motion footage by simply playing back at 30 FPS.
Removable battery, allowing you to fly long sessions using multiple batteries without recharging (the battery will last about an hour, so this should be plenty of footage for most sessions).
5-15V DC micro USB input, so you can ditch the battery (and associated weight) entirely and run from your flight LiPo battery. The package comes with the cable for this, making it very easy.
The wide dynamic range provides great image clarity even in mixed lighting.
160° wide angle means you will capture practically the same image you see on your FPV camera.
Gorilla Glass lens cover, meaning the RunCam 3S can take a beating without leaving you with a cracked/scratched image.
Accepts standard microSD cards
Video Resolution: 1080p@60fps / 1080p@50fps / 1080p@30fps / 720p@60fps
Video File Format: MOV
Image Resolution: 2MP
AV Output Format: NTSC / PAL Switchable
Communication Interface: Micro USB
microSD card supported: 64G max
Battery Capacity: 850mAh
USB Power Input: DC 5-15V
Power Consumption: 620mA @5V
Dimension: 40mm x 38mm x 36mm
Net Weight: 60g with battery