The CST Berger electronic rotary laser detector allows user to locate red laser beam easily in bright light and over long distances. Application: General.Battery Type: AA.Battery Included: Yes.Laser Output: Red beam.Red rotary laser detector.Can be handheld, rod-mounted or magnetically mounted to drop ceiling grid.Front and back LCD windows.7 channels of resolution to allow user to easily get on grade without bouncing above and below.Bright LED display with bright blue on-grade light.Co-molded rubber housing.Sealed for waterproof and dustproof rating of IP67.Includes bracket with screw knob and quick-release clamp.Operates on 2 AA batteries (included)