Feature: 1. Output 12 laser lines for finer positioning, with self-leveling system, flexibility and stability. 2. 360° rotatable base, and equipped with fine adjustment mechanism, can make the machine quickly find the target. 3. 1/4inch screw size for easy connection, it can be used with tripod to adjust the working height of the machine. 4. Comes with wall-mounted bracket, can be easily attached to the floor tiles, wall stickers, and ceilings, all 7mm pitch. 5. Watreproof and dustproof, suitable for both indoor and outdoor use. 6. Adopts optical , K9 material, fine transmission, with clear laser light. 7. Equipped with self-test calibration function, ≤3° automatic leveling, but if the angle is over 3°, the laser light will keep blinking reminding you to reset them on a flat ground. 8. Rotation knob design, clockwise rotate to open it, anticlockwise rotate to close it. 9. Two touching buttons design, one OUT/H button, one V button, horizontal line and vertical line with a clearly division. 10. The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. 11. Easy to carry with the case, providing quick and convenient mobility and storage. 12. Extension Bar: 13. Made of thicken aluminium alloy material, firm with fine load-bearing, not easy to deformed and not easy to break. 14. Three heights adjustable, you can adjust according to your demands easily. 15. Equipped with bubble-level to help you to check whether the tripod is horizontal or not. 16. Equipped with rocking bar to adjust to height of the tripod, smooth and effort saving. 17. With fixed plectrum to control to extend length to lock it tightly. 18. Suitable to most of laser level with 5/8\" interface. Specification: The 3D level meter can emit visible lase horizontal and vertical lines for the automatic leveling separately or simultaneously. Provides accurate horizontal and vertical datum for indoor construction stakeout and calibration, easy to operate, and versatile. Comes with one extension bar, which is made of thicken aluminum alloy material, 3 heights adjustable, suitable to most of level with 5/8" interface. Suitable for flooring tile layout, paneling, wallpapering, stenciling, wainscoting, finish carpentry, wall stud layout and partition installation. You can have a try. Features: Output 12 lines for finer positioning, with self leveling system, flexibility and stability. 360° rotatable base, and equipped with fine adjustment mechanism, can make the machine quickly find the target. 1/4" screw size for easy connection, it can be used with tripod to adjust the working height of the machine. Water resistant, suitable for both indoor and outdoor use. Adopts optical , K9 material, fine transmission, with clear light. Equipped with self test calibration function, ≤3° automatic leveling, but if the angle is over 3°, the light will keep blinking reminding you to reset them on a flat ground. Rotation knob design, clockwise rotate to open it, rotate to close it. Two touching buttons design, one OUT/H button, one V button, horizontal line and vertical line with a clearly division. The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. Easy to carry with the case, providing quick and convenient mobility and storage. Extension Bar: Made of thicken aluminum alloy material, firm with fine load bearing, not easy to deformed and not easy to break. Three heights adjustable, you can adjust according to your demands easily. Equipped with bubble-level to help you to check whether the tripod is horizontal or not. Equipped with rocking bar to adjust to height of the tripod, effort saving. With fixed plectrum to control to extend length to lock it tightly. Suitable to most of level with 5/8" interface. Specifications: Name: Level Main material: plastics+metal Battery: 2 * rechargeable battery, 3.7V, 2400mAh (included, you will find there are two battery batteries inside if disassemble one) Line : 3D, 12 lines Range: 30m lines accuracy: ±0.2mm/m light color: green light Self levelling range: ±3° Leveling time: ＜4s class: 2 Working temperature: -10℃ to 40℃ Storage temperature: -20℃ to 70℃ Humidity: 90% Working time: 3-9 hours Extension bar interface: 5/8in Item size: level size: 137 * 110 * 130mm / 5.39 * 4.33 * 5.12in Extension bar: 560 * 105 * 90mm / 22.05 * 4.13 * 3.54in Package size: 440 * 215 * 255mm / 17.32 * 8.46 * 10.04in Package weight: 2481g / 5.47lb . Package List: 1 * Level Machine with Battery 1 * Replacement Battery 1 * Base Stand 1 * Power Adapter 1 * Wall Mounted Bracket 1 * Iron Board 1 * Level Machine Carrying Bag 1 * Guideline 1 * Extension Bar 1 * Extension Bar Carrying Bag Note: The output maker is located on the output hole. Do not stare directly at the light. Do not disassemble the instrument and perform internal repairs by yourself. This instrument meets the radiation safety rating standard.