SureFire V1-B-BK V1 Vampire Dual Output LED Light, 250 lm Virtually indestructible 250 lumen high/5 lumen low white light and 100Mw high/5Mw low IR LEDs Regulated to maximize light output and runtime Infrared and white-light output from one all-led head, no IR filter needed Two output levels: high for maximum light, low for extended runtime Dual-output tail cap click switch: Press for momentary-on high, click for constant-on high, return to off then Press or click again for low Tier lens produces tight beam with enough surround light for peripheral vision