Features 1、Laser ground level meter, high‑quality ABS material, which is moisture‑proof and wear‑resistant. 2、High‑accuracy laser positioning, low energy consumption, and battery life of up to 20 hours. 3、With a horizontal leveling bubble setting, convenient for horizontal positioning and easy to operate. 4、Laser wavelength is 523nm, the working distance is about 5m, and the emission angle is 180 degrees. 5、Support dot/line/crossed line, automatic leveling, simple operation, long service life. Specification Item Type: Laser Line Gauge Material: ABS Laser Wavelength: 523nm Working Temperature: -10-42℃ Launch Angle: 180 Degree Working Distance: 5m / 16.4ft Line Width: 0.5-1.5cm / 0.2-0.6in Color: Blue Line Direction (Horizontal): 1H Leveling Type: Automatic Leveling Accuracy ±0.6mm / 1m Maximum Range: 10m Battery Life: 20h LED: <1.5MW at 530-580nm Battery Type: 2 x AAA 1.5V Battery (Battery Not Included) Scope of Application: Multi-Function Package List 1 x Laser Line Gauge (Battery Not Included) 2 x Needle