The tcm-550xls compact tactical weapon-mounted light uses a super-bright led rated at 550 lumens working in conjunction with a precision-engineered total internal reflection (tir) lens to create a bright white beam of light rated at 136 meters.This weapon light features completely ambidextrous and intuitive rear-facing toggle switches on each side of the light to operate momentary, constant-on and strobe lighting modes.The housing of the tcm-550xls is constructed from aircraft-grade 6061-t6 aluminum with a polymer rear housing.Includes four handgun-specific modular rail inserts (pre-configured with c1 insert for glock pistols), two spare allen screws, allen wrench, and one cr123 lithium battery.Material: 6061 T6 AluminumType: Weapon LightOutput: 550 LumensOal: 2.50"Weight: 2.50 ozBattery: CR 123Proofs: WaterproofColor: BlackRechargeable: NoFilter Color: ClearSwitch Type: AmbidextrousHazair: Yes