I am really interested in getting one of these. However, in my limited time spent researching, it looks like there are some variations in models
From what I've seen they have
I think the decoder ring reveals the following
G1W is the original - 120° viewing angle, class 4 or 6 cards
G1WH is the update to the original - 140° viewing angle will take class 10 cards
G1WH-B adds a black bezel to the original
G1W-C deletes the battery for higher heat tolerances. Capacitor model
G1W-CB is the same as the C but with a black bezel
G1WH-X gets you a 170° viewing angle
Lots of variations in pricing +/- $40 depending on the model, vendor, prime - coming from China direct etc.
I'm very impressed with this little camera from what I've seen. Might have to pick a couple up for the front and back. It will be nice to have back up in case of an accident and maybe I'll catch an alien flying across the sky or something!