The TSM-13W Subcompact Tactical Weapon-Mounted Light for all Sig Sauer P365 pistols (X/XL/SAS) uses a super-bright LED rated at 150 lumens working in conjunction with a precision-engineered miniature reflector to create a bright white beam of light rated at 104 meters. This weapon light features completely ambidextrous and intuitive toggle switches on each side of the light to operate the momentary-on and constant-on lighting modes.