... line plus one 90°reference line.*Automatic shut off laser line if out of self leveling range.*Equipped with ... rangeup to 10m, depend upon illumination of working area.Laser diode 635nm,Class 2MSelf leveling range±5°Self leveling speed ≤ ... size Alkaline batteriesBattery lifeContinuous use 15hoursWeight0.9KGStandard outfitLP330 main unit,laser glasses, target plate, wall mount, instruction manual,soft ...