Gloworm X1 Light System with upgraded 4-cell battery. Includes charger, helmet mount, standard lens, spot lens, and flood lens. The commuter mode daylight beacon throws an incredible burst of light and it's a great light that has served me well for the past three years. It works perfectly but I'm updating to a newer system so I'm selling this and a Lezyne Deca Drive listed separately. (Note: The battery hold its charge but I don't know if it still meets its rated capacity.) Buy both Light systems and I'll combine shipping.