Dot Laser, Accuracy +/-1/8 in @ 35 ft, Battery Type AA, Features Alkaline Batteries Last 12+ Hours for All Day Runtime, Base Mounts to Metal Surfaces, Includes Batteries, Case, Floor Mount, Integrated Magnetic Base, Number of Planes 0, Number of Dots 5, Number of Lines 0, Working Range with Detector - Maximum 150 ft, Working Range without Detector - Maximum 150 ft, Mount Type Magnetic, Mounting Bracket, Includes Batteries Batteries Included, Leveling Type Pendulum Self-Leveling