This is a fantastic Pro-Tech/Whiskers collaboration knife!
Upon first glance there is nothing about the BR-1 to make you suspect it's an auto (no button of course). In my experience 9 out of 10 people that you hand it to will NOT be able to open it until you show them where the trick spot is.
The BOLSTER slides up / this very deliberate movement is what fires the blade open and also unlocks it from the open position.
Blade Length: 3.10"
Blade Width: 0.83"
Blade Thickness: 0.110"
Handle Length: 4"
Handle Width: .45"
Handle Material: Aluminum