OpenClose GLL 2-20 Self-Leveling 360° Horizontal Cross-Line Laser Four-mode functionality, including single vertical, single horizontal, horizontal/vertical combination and lock/manual modes. The 360° coverage gives the user one setup point for an entire room. The GLL 2-20 range is 65 Ft. diameter with accuracy of ± 3/16 In. at 30 Ft. Smart Pendulum System features self-leveling function and indication for an out-of-level condition. Pendulum lock protects the unit for safe transport to the jobsite. The BM3 positioning device easily holds the laser and attaches to objects for precise positioning. INCLUDES (1) GLL 2 Self-Leveling 360° Horizontal Cross-Line Laser (1) BM3 Positioning Device (1) Mounting Bracket (1) Laser Target (4) AA Batteries (1) Carry Case BENEFITS Bright 360° horizontal cross-line laser for one setup point Smart pendulum system self levels 120° vertical projection for cross-line applications Pendulum lock for safe transport Multi-purpose positioning device for versatile use The GLL 2-20 range is 65 Ft. diameter; 3/16 In. accuracy Specifications IP Rating IP 54 Laser Beam Color Red Laser Diode Class II 635 - 650 nm Leveling Type Self-Leveling, Up to 4° Material Plastic composite Mount Threading 1/4-20 Operating Temperature 41° F / 5° C ~ 104° F / 40° C Range Up to 65-ft. Weight 0.7lb.