Self-Leveling Line Laser (Red laser beams)

Specifications:
Working Range: 0~20 m
1 Horizontal Line
4 Vertical Lines
Levelling accuracy: :±1.5mm at 5 m
Line accuracy: ±1.5mm at 5 m
Levelling time: <3s
Self-levelling angle: ≤4°
Laser Type: 650nm
Laser Class Ⅱ，<1mW
Included accessories: 1 pc Safety goggles, 1 pc strap, 1 pc usb line, & 4 pcs battery