Microtech Troodon Mini D/E OTF Automatic Tactical (1.9" Black) 238-1 T
Features:
Black-finished dagger blade made from premium steel.
Thumb slide for snappy automatic blade deployment and retraction.
Black-anodized aluminum handle that is textured for a sure grip.
Deep-carry clip for secure pocket carry.

Small-scale OTF automatic knife. Some benefits of its smaller size include less travel for the thumb slide, making it easy and fun to operate, and the knife won't dominate your pocket, leaving room for your phone, key, etc.