Feature: 1. 16 lines for finer positioning, with self-leveling system, flexibility and stability. 2. Self-leveling function can conquer small rugged place such as 3°, over 3° the laser light will keep blinking to remind you to put it on a flat place. 3. Alarm function beyond the safe range. 4. The magnetic-damping compensation system ensures quick levelling time. 5. 1/4\" screw size for easy connection, it can be used with tripod to adjust the working height of the machine. 6. A 360° horizontal line can be drawn on the wall. 7. Two vertical lines can be drawn on the wall. 8. Leaning function, it can be applied in a leaning position like upstairs building. 9. Comes with one T-type wall mounting bracket, 7mm wall mounted distance, general for indoor and outdoor use. 10. Three touching buttons design, one OUTDOOR/Open button, one V button, and one H button, the oblique line, horizontal line and vertical line with a clear division. 11. The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling. 12. Comes with one remote control, A\u003dvertical line, B\u003dhorizontal line. 13. Scaning QR code on the back of remote control to download phone APP, convenient to control the level machine. 14. The laser level is controlled by the APP through BT connection, also has electric quantity display and voice control function. 15. Easy to carry with the case, providing quick and convenient mobility and storage. 16. Note: Please do not let the laser line shoot to your eyes directly. Specification: Name: Laser Level Main material: plastics metal Battery: 1 * 3.7V, 2400mAh battery (included, you will find there are two lithium battery batteries inside if disassemble it) Laser ray: 360°* 4, 16 lines(40) Wavelength: Green light 515nm Horizontal/vertical accuracy: ±0.2mm/10m Self-levelling-range: ±3° Waterproof grade: IP54 Working-range: about 25m in diameter Working time: about 5 hours Green light working temperature: -5℃ to 50℃ Level machine size(assemble with battery): 135 * 105 * 126mm / 5.31 * 4.13 * 4.96in Bag size: 220 * 250 * 145mm / 8.66 * 9.84 * 5.71in Item weight: 1373g / 3.03lb Package size: 215 * 165 * 255mm / 8.46 * 6.50 * 10.04in Package weight: 1550g / 3.42lb Packing List: 1 * Level Machine 1 * Lifting Platform 1 * Mini Remote Control 1 * Wall Mounted Bracket 1 * Clip 1* Iron Board 1 * 1/4" to 5/8" Adapter 1 * Power Cable 1 * Carrying Bag 1 * Manual. Package List: 1 * Level Machine 1 * Lifting Platform 1 * Mini Remote Control 1 * Wall Mounted Bracket 1 * Clip 1* Iron Board 1 * 1/4" to 5/8" Adapter 1 * Power Cable 1 * Carrying Bag 1 * Manual