Thanks for Kim from UK, who design the below banner, it is very smart design, that the best present the features of the C3, the small and discreet lens case, and interchangeable lens, very impressive!
Below photo is from Fishie in Singapore, who took the below beautiful photo after his two the C3 installed. the lens is under head light.
Below is the close look, it is from other bike. This is 90 degree lens attached on the mount to solid glue on the bike. The lens is aluminum made, solid and waterproof, do not worry about ridding in the raining days, and it will never draw the thief's attention when leave it alone.
This is to show how the recording unit installed. it is under seat. Transit the power from 12V to 5V to connect the recording unit, once the bike power on, the recording start, power off, the recording stop. and loop recording let the last video clip to replace the first one, you do not worry the SD card is full.
Here is the recordings in day and night, the C3 is under head light, it records where you go.