Spyderco Police 4 Lightweight K390 (SKU C07FP4K390). Full-flat K390 MICROCLEAN blade, FRN handle, back lock, and a four-position clip. Made in Japan. Specs from Spyderco's Police 4 Lightweight K390 page.
Overall 9.97". Blade 4.38". Edge 3.97". Closed 5.64". Thickness 0.118". Steel K390. Handle FRN. Back lock. Full-flat grind. 4.2 oz. Clip ambidextrous, 4-position. Origin Japan.