TLR-6 Light M&P Shield. Water resistant. Weapon mountable. Impact resistant. 100 lumens. Fits M&P Shield 40 and Shield 9 subcompact handguns. Ambidextrous operation. Three modes of operation: White Light (1 hour runtime), White Light/ Red laser (1 hour runtime), Red laser (11 hour runtime). Windage and elevation screws mounted in brass brushings. Contoured housing securely attaches to trigger guard. Batteries replaceable with unit mounted on handgun. Operating temperature range: -20 degree to 120 degreeF. Requires 2 CR1/3N batteries (included). Hang packaged.