The Black Diamond Spot 400 headtorch is a high-output lighting solution designed for trail running, backpacking, and technical climbing. It features a compact, low-profile housing with improved lens efficiency. The user interface utilizes a primary switch for brightness control and a secondary switch for mode selection. The light offers a multi-faceted optical lens design and provides multiple lighting modes, including full strength, dimming, strobe, red night vision, and a digital lockout mode. The housing is IPX8 waterproof rated.