Features:1. High brightness green light, indoor and outdoor clearly.2. 3degree Automatic self leveling function. Warning when beyond auto leveling range.3. 360degree rotating base with fine tuning knob, quickly identify the target.Thickened base provides stable support and it is shockproof.4. High quality and long service life. When using the tripods, diagonal lines can be struck.5. Precise measurement and more convenient to use. Waterproof, dustproof and high precision.6. With light point design, provide convenience for the construction.Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow slight deviation due to manual measurement.Specification:Type: Infrared levelRay wavelength: Ray line and horizontal ray line wavelength: 635nm, lower point: 1x650nmAutomatic Leveling Range: 3degree, over-range light flashesProjection Angle: 120degreeHorizontal accuracy: 5m1mmVertical accuracy: 5m1mmBottom point accuracy: +1mm/1.5mOrthogonal accuracy +1mm/3meterLine width: 2mm/5mWorking environment: indoor/outdoorPower supply: 3 AA batteries(batteries not included) or AC powerInclude:Choice 1:1 x 2-line Infrared levelChoice 2:1 x 2-line Infrared level1 x holderChoice 3:1 x 3-line Infrared levelChoice 4:1 x 3-line Infrared level1 x holderChoice 5:1 x 5-line Infrared levelChoice 6:1 x 5-line Infrared level1 x holderincludes:Choice 1:1 x 2-line Infrared level1 x rechargable battery1 x English and Chinese manual1 x chargerChoice 2:1 x 2-line Infrared level1 x holder1 x rechargable battery1 x English and Chinese manual1 x chargerChoice 3:1 x 3-line Infrared level1 x rechargable battery1 x English and Chinese manual1 x chargerChoice 4:1 x 3-line Infrared level1 x holder1 x rechargable battery1 x English and Chinese manual1 x chargerChoice 5:1 x 5-line Infrared level1 x rechargable battery1 x English and Chinese manual1 x chargerChoice 6:1 x 5-line Infrared level1 x holder1 x rechargable battery1 x English and Chinese manual1 x charger