SW‑331G Cross Laser Meter Horizontal Vertical Green Beam Leveling Tool Instrument Item Type: Green Beam Level Material: ABS Uses: Used in construction, decoration, home improvement, home furnishing, furniture, etc. Built-in Battery: USB-C charging, 3.7V1400mAh lithium battery Laser Type: LD Green Light 520nm Laser Class: Class 2 Laser Power: 15mW x 1 Leveling Accuracy: ±3mm/10m Vertical And Horizontal Accuracy: ±3mm/10m Leveling/Compensation Range: 4°±1° Leveling Time: ≤3s Expansion Angle: H&V:110° Waterproof/Dustproof Rating: IP54 Working Temperature: -10℃-50℃ Storage Temperature: -10℃-50℃