Positive things:
- Sales and Tech support from CRFs and Twenty20 has been exemplary.
- Product is easy to use and very stable.
- Can use included velcro to build a house (This stuff sticks!!!)
- One 9V battery lasts forever (well, almost

- Great image and sound quality.
Negative things (only one and it's pretty minor):
- Battery case has an on/off slider switch that protrudes from the case a bit. I have had several occasions where this on/off switch was accidentally "bumped" to the off position in my pack, while riding (missing out on video.) I have since wrote to Twenty20 suggesting, if possible, to redesign the on/off button so that it is recessed a bit in the case. In the meantime, I used my Dremel to grind down the little switch button so that it is flush with the case. Aside from a tiny little abrasion I put in the battery case (due to the Dremel getting away from me a bit,) the battery case looks factory and I haven't had a problem with "bump" shutoffs since.
Great product...great support. I recommend considering it if you're in the market for a helmet cam.