The CST Berger electronic rotary laser detector allows user to locate green laser beam easily in bright light and over long distances.Application:General.Battery Type:AA.Battery Included:Yes.Laser Output:Green.* 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.