Features :
Self-levelling cross line laser is accurate to ±0.3 mm/m in levelling applications
Built-in magnetic pivot bracket mounts easily on metal surfaces
Overmolded housing helps maintain calibration under jobsite conditions
Includes 3 (AA) batteries for 20+ hours runtime
2-button operation & low battery indication for ease of use
Self-Levelling up to 4° surface angle with automatic out of level indication, marks a leveled line in seconds
Kit box protects unit and helps maintain calibration when stored in gang box

Specifications ;

Power Supply 4.5V - 3x AA
Self-Leveling Range Avg. 4 °
Laser class 2, <1mW
Accuracy +/-0.3 mm/m
Indoor visibility range 15 m
Tripod connection 1/4in
Number of beams 2
Direction of beams vertical/level
Weight [excluding battery] 0.46 kg
Width 61 mm
Length 112 mm
Height 113 mm

Standard 3 x AA size alkaline batteries, Wall mount bracket,
heavy-duty carrying case.