The affordable CST/Berger horizontal/vertical manual-leveling dual-beam rotary laser unit is perfect choice for DIYers to professional contractors. Ideal for drop ceilings, cabinetry and outside work.Application:Contractors, Do-it Yourself,Range:800ft.Rotation Speed:150 and 600 RPM.Accuracy:+-1/4in at 100ft.Battery Type:C.Battery Included:Yes.* Visible beam range up to 200-ft. diameter. * Up to 800-ft. diameter outdoor range with optional LD120 laser level detector.* One-button operation controls laser functions.* On/off power.* Variable speed rotation (150 & 600 RPM).* Spot mode. * Short and long laser chalklines. * Protected level vials prevent damage and prevent misreads in sun. Built-in vertical trivet for vertical applications. * Tripod mount on bottom and side.* Runs up to 60 hours on 4 C batteries (included).* Battery level indicator light.* Kit includes laser, wall/ceiling mount, magnetic grid target, remote control, glasses and carry case.