4 Lines Ground Laser Level Green Light Self-leveling 360 Horizontal Line High Precision Laser Level Meter for Indoor Outdoor Feature 1. Any horizontal line 2. Four-speed adjustment to save energy 3. Automatic leveling and accurate measurement When the inclination angle is less than 4°, it will be automatically leveled, and the green light will be always on. When the inclination angle is greater than 4°, the indicator will turn red and the laser line will flash. 4. Waterproof/dustproof/fall-proof ergonomically covered with soft rubber, sturdy and durable 5. High and low temperature resistance (-10°C-40°C), long life, uniform light 6. The sturdy shell is wear-resistant and durable, and the upper and lower two general screw holes meet different work requirements. 7. Type-C interface, built-in 2000mAh lithium battery, with power display up to 16 hours 8. The body is compact and ergonomically designed Specification Product model: X02 (green light) Laser wavelength: 520nm Working distance: 30m operating hours: First gear: 8H Second gear: 10H Third gear: 13H Fourth gear: 16H Light: 360° horizontal line Leveling compensation range: automatic leveling, 4°±1 Leveling accuracy: ±5mm/5m Operating temperature: -10°C~40°C Storage temperature: -25°C~70°C Battery type: 2000mAh built-in lithium battery (Type-C interface) Laser class: class 2 (output power <1mW) Size: 98*72mm Package include 1x Laser level 1x Magnetic L Bracket 1x Typc usb cable 1x English user manual 1x Canvon bag