Highlight R20 is a prefect tactical LED flashlight for a rifle owner. This low profile and light weight tactical flashlight can bright 300 yards without adding much weight to your rifle. Equipped with CREE XM-L2 LED and powered by 2x CR123A lithium battery, it can output max 600 lumens. Its unique strobe function will definitely blind any intruder at night. It is equipped with a smart remote pressure switch. The smart pressure switch has two keys, a key for stays on/off, and a key for moment on.