The Princeton Tec Sync Headlamp is easy-to-use and will bring you light to dark situations. The Sync allows direct access to a red LED beam, and a flood beam by just a twist of the power dial. This headlamp also features dual beam mode, for those times that require maximum output. The complete options of modes are, dual beam, spot, high flood, low flood, and red. The headlamp has a burn time of 200 hours and requires 3 AAA batteries (included). Power: 90 lumens. Weight: 2.9 oz.