Feature:1. Portable green beam level tool, support highaccuracy automatic projection line.2. Widely used in construction, decoration, home improvement, home furnishing, furniture, etc.3. Supports multiple projection methods, leveling accuracy is 3mm/10m, compensation range is 41.4. IP54 waterproof/dustproof grade, suitable for wall bricklaying, staircase laying, etc.5. Small size, light weight, easy to carry, and can work continuously for 4 hours.Specification:Item Type: Green Beam LevelMaterial: ABSModel: SW-311GUses: Used in construction, decoration, home improvement, home furnishing, furniture, etc.Battery: 1.5V 2 x AA Battery (Battery Not Included)Laser Class: Class 2 (IEC/EN60825-1/2014)Laser Wavelength: 510-530nmLeveling Accuracy: 3mm/10mVertical And Horizontal Accuracy: 3mm/10mLeveling/Compensation Range: 41Working Distance (Laser Line): 20m / 65.6ftWorking Time: 4 HoursWaterproof/Dustproof Rating: IP54Working Temperature Range: -10-50Storage Temperature Range: -20-70.Package List:1 x Main Host1 x Portable Bag1 x Bracket1 x ManualNote:1. During operation, please do not expose your eyes to the outgoing laser beam.2. Do not modify the instrument without authorization.