Features:  -- 4D 16/12/8 line irradiation, 360° without dead angle.  -- Indoor and outdoor general Universal, High brightness green, indoor and outdoor clearly, far projection distance, high laser height, clear lines.  -- Precise measurement and more convenient to use.  -- 8/12/16 line can be Optional, suitable for different occasions to meet different engineering needs.  -- Crashworthy and anti knock, 4D soft rubber clad, crashworthy and anti knock.  -- International standard IP54 waterproof and dust-proof, multiple protection, Longer life in harsh environment.  -- 4000mAh large capacity battery with longer endurance life, long service life, 4000 MAH large capacity li batteries, standby time more than 72 hours, working hours can last 12-16 hours,can work for 2 days after charged.  -- With the use of tripod, you can work with 180° oblique line.  -- ±3°Automatic self leveling function. Sound warning when beyond auto leveling range.  -- LED power display on battery.     Specifications:  Material: Aluminum Alloy Chassis Engineering Plastics.  Laser lines: 16/12/8 line.  Laser Color: Green.  Laser Level Color: Green.  Wall attachment distance:7mm.  Horizontal/Vertical Accuracy: ±0.2mm/ 1m.  Wavelength green light: 532.  Automatic leveling range: ±3°.  Rotation Degree: 360°.  Slash function: Yes.  Protection level: IP54 Dustproof & Waterproof.  Operating temperature: -20℃-50℃.  Battery capacity: 4000mAh.  Working environment: Indoor/Outdoor.  Working time: 12~16h.  Power: 1 x 4000mAh Rechargeable Li Battery /Direct charging(4.2V ).  Size: 10*12*6cm/3.9*4.7*2.4in.     Package Included:  1 x Laser Level.  1 x Remote Control.  1 x Lift Holder.  1 x Wall Bracket.  1 x Iron Sheets.  1 x Tripod connector.  1 x Lithium Battery.  1 x Charger(US/EU).  1 x Anti-fall box.  1 x User Manual.     Note:  1. Please allow 0.5-1cm differences due to manual measurement.  2. Due to the light and screen difference, the item's color may be slightly different from the pictures.