With the buttons removed from the sunglasses the recording generally lasts as long as the ride (subject to TF card and battery restrictions naturally). The down side is of course that I now have to carry a paperclip or knife to activate the recording button.
(These are so inexpensive they are nearly disposable – ebay auctions starting at $19.) There are more expensive models that are more asthetically pleasing, but for this application the fugly unit that I have is entirely adequate.
I’ll explore some options for bike mounted cameras where the field of vision doesn’t induce motion sickness.
I’m liking these things so far, but think it would be neat to have a fixed camera and the sunglass camera video edited together in a PIP sorta show (hell, not even sure I can do that, but it’ll be fun finding out).
A night ride
Edited to Add: Ok, these $18 sunglass cameras have one serious issue. Unlike it’s dashcam counterparts which record activity in specific “blocks” (1, 5 or 10 minutes) the sunglasses keep recording until you tell them to stop. This is fine if you stop the recording prior to them running out of space, but should they run out of space WHILE recording the entire process seems to crash. The unit does not respond to the buttons (I have to wait for the battery to die to access storage via USB) and the entire SD card is filled with a ghost file with no actual content (a 0kb AVI file that occupies the entire disk).
I have ordered an “improved” (and consequently more expensive version) along with a replacement, and more testing will follow.