I wear a Daytona skull helmet and it fits great with that. Sound quality for phone calls is excellent. Audio for audio files is just okay. Works great for me as i like to ride distance and this keeps me rolling when a phone call is necessary.
Exceeded my exceptions. The range is better than I thought it would be, which is a pleasant surprise. The sound quality is very good and loud enough to hear over the rumbling of my Harley. When I speak to people on the phone that can't believe I'm on my bike. It really eliminates the back ground noise. Would highly recommend this product.
This is a well thought out product and well worth the $135 (includes chip price). The sound quality is much better than I anticipated and the video is also quite good. The form factor is so small, you don't even know it is there. The audio voice prompt (camera on/off) is a nice feature. It does what it is supposed to do without the complexity of other cameras in this space.
The box comes well equipped for different types of installation. Not hard to install but the instructions are not very good. You can print the 80 page manual if you choose. The feature to tap the device to activate voice commands does not work on mine. Not sure if the current firmware supports that feature. Sound is good and look forward to using it for years to come.