Features: 1. 4D 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. 16 line can be Optional, suitable for different occasions to meet different engineering needs. 5. Crashworthy and anti knock, 4D 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. LED power display on battery. Specifications: Material: aluminum alloy chassis engineering plastics. Laser line: 16 line. Laser color: green. Laser level color: green, red. Wall distance: 7mm. Horizontal/vertical accuracy: ±0.2mm/1m. Wavelength green light: 532. Automatic leveling range: ±3°. Rotation angle: 360°. Slash function: Yes. Protection level: IP54 dustproof and waterproof. Working temperature: -20℃-50℃. Battery capacity: 4000mAh. Working environment: indoor/outdoor. Working time: 12~16h. Power supply: 1 x 4000mAh rechargeable lithium battery/direct charging (4.2V). Size: 15.5x8x15cm/6.1x3.1x5.9in. Package Included: 1 x Laser Level. 1 x Remote Control. 1 x Holder. 1 x Lift Holder. 1 x Wall Bracket. 1 x Iron Sheets. 1/2 x Lithium Battery. 1 x Charger(US/EU/AU Plug). 1 x Anti-Fall Box. 1 x User Manual. Notes: 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.