Feature:1. It can be widely used in stair floor laying, woodworking decoration, hanging installation, wall construction, doors and window decoration.2. The use of green beam fine light source, high accuracy, accurate measurement, small error, more convenient to use.3. Made of high quality ABS material, durable, wear resistant, corrosion resistant, long service life.4. Self leveling, automatic alarm for uneven products, intelligent and convenient, higher efficiency.5. Portable design, it effectively reduces labor strength, improves working efficiency. It can be hung on the wall and can be used anywhere.Specification:Item Type: Line LevelMaterial: ABSColor: As shown in the pictureDisplay: 2 lines of green beamLight Source: SemiconductorOptical Power: <2.0mWAccuracy: 0.5mm / 5MStraight Line Width: <2.5mm / 5Stable Balancing Time: <5 secondsAutomatic Correction Range: 3Laser Angle:> 90Applicable Temperature: -10-50Power Supply: 2 x 1.5V AA batteries (batteries not included).Package List:1 x Line Level(Battery Not Included)1 x Cloth BagNote:Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.