1. 4D 16-line: 16 laser lines can be emitted individually or simultaneously for more accurate positioning. It is equipped with a 3° self-leveling system, which is flexible and stable. It uses high-quality laser diodes and high-precision conical mirrors. The emitted laser lines are thin, bright, with high precision and adjustable brightness. 2. ±3° Automatic leveling: It is equipped with a self-check and calibration function. The self-leveling range is ≤3°. However, if the angle is greater than 3°, the laser light will flash continuously, and the laser level will emit a beeping sound to remind you to re-level it on a flat surface. 3. Remote control: It comes with a remote control. H = vertical line, V = horizontal line. You can easily adjust the brightness of the laser light by pressing the + or - buttons. Scan the QR code on the back of the remote control to download the mobile APP for convenient operation of the leveling machine. The laser level is controlled by the APP via Bluetooth and has the functions of adjustable laser light brightness and voice control. 4. Multifunctional design: Press and hold the OUT button for 3 seconds to enter the tilt mode. Then you can position the laser tool at any angle to project a tilt line. Press the OUT button briefly or press and hold the H or V button to freely adjust the laser brightness according to the working conditions. 5. Value-added accessories: T-shaped bracket with a wall-mounted distance of 7mm. It is equipped with a 360° rotating base and an adjustment mechanism, allowing the machine to quickly find the target (1/4-inch screw size). A 1/4-inch to 5/8-inch thread adapter can be used with a 5/8-inch thread tripod to adjust the working height of the machine. Laser level lifting bracket. 4D 16-line green laser level, more accurate. 3x360 green cross laser level with 360-degree horizontal and vertical self-leveling, with an accuracy of 3°.