The TCM-365 Subcompact Weapon-Mounted Light for the Sig Sauer P365-Series produces 650 lumens from a single CR123 battery. Its unique rail clamp is designed specifically for the unique side slots on the P365 model pistols which include the X XL SAS 380 and XL Spectre Comp. An engineered TIR lens projects a tight bright spot for threat identification and confirmation that reaches 136 meters. The lens also produces a crisply defined outer halo for additional situational feedback.The TCM-365 features completely ambidextrous and intuitive rear-facing toggle switches on each side of the light to operate the momentary-on and constant-on lighting modes. A user-programmable strobe mode and battery-safe mode are available when needed. Constructed from aircraft-grade 6061-T6 aluminum with a polymer rear housing the light comes with one CR123 Lithium battery.