The laser 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. Suitable for flooring tile layout, paneling, wallpapering, stenciling, wainscoting, finish carpentry,wall stud layout and partition installation Features: Compact size, lightweight and portable, easy to carry with the case, providing quick and convenient mobility and storage. Output 16 laser lines for finer positioning, with self-leveling system, flexibility and stability. Adopts optical , fine transmission, with clear laser light. 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. Push button design, push left to open it, push right to close it. Touching buttons design, horizontal line and vertical line with a clearly division. 1/4" to 5/8" thread adapter for easy connection, it can be used with tripod to adjust the working height of the machine. Comes with one remote controller, "H/+"=vertical line, "V/-"=horizontal line. The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. Scanning QR code on the back of remote controller to download cellphone APP, convenient to control the level machine. The laser level is controlled by the APP through BT connection, and also has laser light brightness adjustable and voice control function. The T-shape bracket has 360 rotatable base, and equipped with fine adjustment mechanism, can make the machine quickly find the target(1/4" screw size). With 7mm wall mounted distance, general for indoor and outdoor use. Comes with one clip for works with wall-mounted bracket to clamp laser level. Waterproof and dustproof, suitable for both indoor and outdoor use. The battery has remaining electricity display function for you to recharge the battery in time. Note: The laser output maker is located on the output hole. Do not stare directly at the laser light. Do not disassemble the instrument. This instrument meets the laser radiation safety rating standard. Specifications: Main material: plastics+metal Battery: 2 * rechargeable battery, 3.7V, 3000mAh (included) Laser ray: 360 * 4, 16 lines(4D) Laser wavelength: green light 532nm Laser lines accuracy: 0.2mm/10m Self-levelling-range: 3 Working temperature: -5 to 50 Working time: about 5 hours