Continuous Usage Time: Approx. 8 hours (Panasonic alkaline batteries) at 48°F (20°C)
Correction angle: Approx. +-4 degrees
Instruction Accuracy: +-3 mm/10 m
Lead direction: gimbal mechanism (horizontal retention mechanism)
Light Source: Visible light semiconductor laser 25.0 inches (635 mm)
Line stop time: about 5 seconds
Line width: 0.1 inch (2.5 mm) or less / 16.4 ft
Lower light: High brightness LED
Output: 1 mW or less, Class 2
Power Supply: 1 AA alkaline battery (1.5 V) (sold separately)