From the manufacturer:
The Flash family of knives feature SOG Assisted Technology™ (S.A.T.), which employs a powerful piston lock that is easily released with a sliding button. The Flash II (Digi Camo - Black TiNi) comes standard with ACU camouflage Zytel™ handle and black TiNi 1/2 serrated blade/clip/pivot. All Flash knives come standard with SOGís patent pending, reversible bayonet mounted clip that ensures the lowest, most discreet carry possible. We also had the foresight to incorporate an additional safety lock that gives added security when the blade is closed. Suggested retail $97.50.
SOG® Flash II Digi Camo