The 3D laser level meter can emit horizontal and vertical horizontal and vertical lines for automatic leveling separately or simultaneously. It provides accurate horizontal and vertical references for staking and calibrating interior structures, easy to use and versatile. It is suitable for laying floor tiles, paneling, wallpapering, patterns, paneling, finishing woodwork, laying wall posts and installing partition walls. You can try. Functions: 12 laser lines output for more accurate positioning, with self-leveling system, flexibility and stability. 360 ° swivel base and equipped with fine adjustment mechanism, can make the machine find the target quickly. 1/4 "screw size for easy connection, can be used with a tripod to adjust the machine's working height. Comes with a wall mount bracket, it can be easily attached to floor tiles, wall stickers and ceilings, all with a 7mm spacing. Waterproof and dustproof, suitable for both indoor and outdoor use. Adopts optical glass, K9 material, good transmission, with clear laser light. Equipped with self-test calibration function, auto leveling ≤3 °, but if the angle is more than 3 °, the laser light will flash reminding you to reset them on a flat surface. Rotary knob design, turn clockwise to open it, turn counterclockwise to close it. Two touching buttons, one OUT / H button, one V button, horizontal line and vertical line with clear division. The button is wear-resistant, very sensitive to fast line mode switching and comfortable to the touch. Easy to carry with the carrying case for quick and convenient mobility and storage. The laser output generator is located in the output port. Do not look directly into the laser light. Do not disassemble the instrument and do not make internal repairs yourself. This instrument complies with the laser radiation safety standard. Specifications: Name: laser level Main material: plastics + metal Battery: 2 * rechargeable battery, 3.7V, 4800mAh (included, there are two 18650 batteries inside, if you disassemble one) Laser beam: 3D, 12 lines Range: 30m Accuracy of laser lines: ± 0.2 mm / m Laser light color: green light Self-leveling range: ± 3 ° Leveling time: ＜ 4s Laser class: 2 Working temperature: -10 ℃ to 40 ℃ Storage temperature: -20 ℃ to 70 ℃ Humidity: 90% Continuous time: 3-9 hours Product size: Band size: 137 * 110 * 217mm / 5.39 * 4.33 * 8.54in Wall Bracket Size: 160 * 86 * 65mm / 6.30 * 3.39 * 2.56in Item weight: 1387g / 3.06lb Package weight: 1572g / 3.47lb Packing List: 1 * leveling machine with battery 1 * removable battery 1 * wall bracket 1 * base 1 * ironing board 1 * power adapter 1 * carrying bag 1 * Guideline