The CST/Berger ALH-PKG Self Leveling Rotary Laser Level Complete Package features Pro-Grade technology that delivers many benefits that makes the ALH-PKG perfect for outdoor jobs. Strong and durable enough for the most demanding construction projects, and with super fast electronic self-leveling and Anti-drift your work is sure to be on each an every time. The ALH-PKG is accurate to 1/16 In. at 100-feet and has a working ranges of up to 2800-feet in diameter when used with the Included LD440 Laser Detector. The ALH-PKG also features Single Manual Grade for grade matching applications. The ALH PKG includes a Three year factory warranty and comes complete with ALH Laser, Alkaline Battery Tray with 4-D Cell Batteries, LD440 Detector and Clamp, Carrying Case, 8-feet Aluminum Rod in feet/inches, Aluminum Tripod and Owners Manual.