Feature: 1. Adopts optical glass, fine transmission, with clearly laser light. 2. 16 lines for finer positioning, with self-leveling system, flexibility and stability. 3. 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. 4. Alarm function beyond the safety ranges. 5. The magnetic-damping compensation system ensures quick levelling time. 6. Three touching buttons design, one V button, one H button, and one OUTDOOR button, the button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. 7. Short press the OUTDOOR button, the laser light will flash, Long press the OUTDOOR button, it will output oblique line. 8. 1/4\" screw size rotation base for easy connection, it also can be used with tripod by it\u0027s 5/8inch thread to adjust the working height of the machine. 9. Comes with one T-type wall mounting bracket, 7mm wall mounted distance, general for indoor and outdoor use. 10. Equipped with window clip holder for works with wall-mounted bracket. 11. The laser level lift bracket, height adjustable, anti-slip texture design for increasing friction, more stable placement. 12. Comes with 1/4 inch to 5/8inch adapter for easy connected with tripod to adjust the working height of the machine. 13. Comes with one remote controller, \"V\"\u003dvertical line, \"H\"\u003dhorizontal line, and you can adjust the quantity of laser lines easily by press the \"+\"or \"-\" button, and press \"*\" button the laser lights will flash, and long press \"V\" button to reduce luminance and press \"H\" button to increase luminance. 14. Scanning QR code on the back of remote controller to download mobilephone APP, convenient to control the level machine(the voice control function is not supported). 15. Comes with the carrying bag, easy to carry, providing quick and convenient mobility and storage. 16. Note: Please do not let the laser line shoot to your eyes directly. Specification: Specifications: Name: Level Main material: plastics+metal Battery: 2 * rechargeable lithium battery, 3.7V, 2400mAh (included, you will find there are two batteries inside if disassemble it) Ray: 360°* 4, 16 lines(4D) Wavelength: green light 532nm Horizontal/vertical accuracy: ±1mm/7m Self levelling-range: ±3° Water proof grade: IP54 Working distance: 10m Green light working temperature: -5℃ to 50℃ Level machine size(assemble with battery): 130 * 103 * 132mm / 5.12 * 4.06 * 5.20in Rotation base size: 97 * 83 * 70mm / 3.82 * 3.27 * 2.76in Wall mounted bracket size: 85 * 72 * 160mm / 3.35 * 2.83 * 6.30in Iron board size: 100 * 60 * 12mm / 3.94 * 2.36 * 0.47in Platform size: 114 * 91 * 30mm / 4.49 * 3.58 * 1.18in Clip holder size: 62 * 25 * 23mm / 2.44 * 0.98 * 0.91in 1/4inch to 5/8inch adapter size: 23 * 23 * 30mm / 0.91 * 0.91 * 1.18in Carrying bag size: 235 * 216 * 150mm / 9.25 * 8.50 * 5.91in Item weight: 1328g / 2.93lb. Package List: 1 * Level Machine 2 * Battery 1 * Battery Adapter 1 * Rotation Base 1 * Wall Mounted Bracket 1 * Iron Board 1 * Lifting Platform 1 * Remote Controller 1 * Clip Holder 1 * 1/4inch to 5/8inch Adapter 1 * Guideline 1 * Carrying Bag