This is a level instrument, 16 lines for finer positioning, with self-leveling system, flexibility and stability. Equipped with LCD display, you can see the remaining electric quantity clearly. With vertical and horizontal laserlines, convenience to use. It is perfect for a variety of uses, including flooring, tile layout, paneling, wallpapering, stenciling, wainscoting, finish carpentry, socket and switch layout, wall stud layout and partition installation. Features: Adopts optical , fine transmission, with clear laser light. 16 lines for finer positioning, with self-leveling system, flexibility and stability. Equipped with self-test calibration function, 3 automatic leveling, but if the angle is over 3, the laser light will keep blinking and also has beep sound to reminding you to reset them on a flat ground. Alarm function beyond the safty ranges. The magnetic-damping compensation system ensures quick levelling time. 1/4" screw size for easy connection, it can be used with tripod to adjust the working height of the machine. Comes with one T-type wall mounting bracket, 7mm wall mounted distance, general for indoor and outdoor use. Comes with one tripod base with 360 rotatable design, 1/4" male and female 5/8" thread, for easy to connected with 5/8" laser level and 5/8" bracket. 1/4" to 5/8" thread adapter for easy connection, it can be used with 5/8" thread tripod to adjust the working height of the machine. 5/8" male thread joint adapter design, easy to use with laser base and tripod bracket, multiple directions adjustable, suitable for most laser levels. The laser level lift bracket, height adjustable, anti-slip texture design for increasing friction, more stable placement. Three touching buttons design, one on/off and brightness adjustable button, one V button, and one H button, the oblique line, horizontal line and vertical line with a clear division. The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. Comes with one remote controller, "V"=vertical line, "H"=horizontal line, and you can adjust the quantity of laser lines easily by press the "+"or "-" button, and press "*" button to adjust the brightness of laser light(two gears of brightness adjustable). Scaning QR code on the back of remote controller to download mobilephone APP, convenient to control the level machine. Connect the APP through BT, also has one-key on/off and voice control function. Easy to carry with the case, providing quick and convenient mobility and storage. Note:Please do not let the laser line shoot to your eyes directly. Specifications: Main material: plastics metal Battery: 2 * rechargeable lithium battery, 3.7V, 2400mAh (included, you will find there are two 18650 batteries inside if disassemble it) Laser ray: 360* 4, 16 lines(4D) Wavelength: green light 520nm Horizontal/vertical accuracy: 0.2mm/10m Self-levelling-range: 3 Waterproof grade: IP54 Working-range: about 25m in diameter Green light working temperature: -5 to50