Features: 1. 3D 16 line irradiation, 360° without dead angle. 2. Indoor and outdoor general Universal, High brightness green, indoor and outdoor clearly, far projection distance, high laser height, clear lines. 3. Precise measurement and more convenient to use. 4. 4/8/12/16 line can be adjustable, suitable for different occasions to meet different engineering needs. 5. Crashworthy and anti knock, 3D soft rubber clad, crashworthy and anti knock. 6. International standard IP54 waterproof and dust-proof, multiple protection, Longer life in harsh environment. 7. 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. 8. With the use of tripod, you can work with 180° oblique line. 9. ±3°Automatic self leveling function. Sound warning when beyond auto leveling range. 10. 360° rotating base with fine tuning knob, quickly identify the target. Thickened metal base provides stable support and it is shockproof, shatter-proof. Specifications: Material: Aluminum Alloy Chassis Engineering Plastics. Laser lines: 16 (4/8/12/16 line is adjustable). Laser 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. Size: 15x8x15.5cm/5.9x3.1x6.1in. Power: 1 x 4000mAh Rechargeable Li Battery /Direct charging(4.2V ). Application: Auxiliary tiles fixing, wall decoration, floor tiles fixing, stair handrails, furred ceiling, floor tile, plastering. Package Included: 1 x 16 Line Laser Level. 1 x Remote Control. 1 x Holder. 1 x Lift Holder. 1 x Wall Bracket. 1 x Iron Sheets. 1 x Lithium Battery. 1 x Charger. 1 x Anti-fall box. 1 x User Manual