As someone who's tried multiple action cameras for shooting sports, the TACHYON GunCam Mini blew me away. The moment I mounted it under my hat's brim, I knew this was different - it disappeared from my field of view yet captured everything from my exact perspective.

The vibration feedback when activating the camera is genius - no more fumbling for buttons during competitions. I particularly love how it automatically shuts off after 2 minutes of inactivity. No more wasting storage space on footage of me just walking around or reloading magazines between stages.

Video quality at 4K is crisp enough to clearly see bullet holes on targets, and the audio picks up range commands perfectly. The built-in WiFi makes transferring clips to my phone a breeze through their dedicated app - though I do wish it supported external SD cards for easier file management.

What really sets this apart is how lightweight and unobtrusive it is. During USPSA matches, I completely forget I'm wearing it until review time, when I get these amazing point-of-view replays that help me analyze my technique frame by frame.

The hat mount is rock solid - no shaky footage even during rapid movement between shooting positions. Battery life lasts through entire competition days, and the customer support team resolved my initial app setup questions within hours.

While the instructions could be clearer, once you get past the learning curve, this camera becomes an indispensable training tool that's worth every penny for serious shooters.