Features:  Compact size, lightweight and portable, easy to take out and carry around with you.  The double light gathering optic lens, high precise light source and high heat dissipating aluminum alloy housing formed a quality laser source, with high transmission.  Adopts high brightness LED light beads, 1-1.5mm average thickness laser line, with clear laser light for higher visibility on both inside and outside.  Output 2 laser lines separately or simultaneously for finer positioning, more flexibility and stability.  Push button design, push to different position to entering into self-leveling mode, open/close laser level.  Two touching buttons design, one V button, and one H button, the horizontal line and vertical line with a clear division.  The button is wear resistant, anti-skid, with high sensitive to switch the line mode quickly, and with comfortable hand feeling.  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.  1/4" thread size on the bottom for easy connection, it can be used with tripod to adjust the working height of the machine.  Comes with a wall-mounted bracket and an iron board to use with the wall-mounted bracket.  It is perfect for a variety of uses, including flooring, tile layout, paneling, wallpapering, stenciling, wainscoting, finish carpentry, wall stud layout and partition installation.  Powered by 2 AA batteries, you should prepare it by yourself.    Note:  The laser output maker is located on the output hole.  Do not stare directly at the laser light.  Do not disassemble the instrument and perform internal repairs by yourself.  This instrument meets the laser radiation safety rating standard.    Specifications:  Name: Laser Level  Main material: plastics+metal  Color: black+red, black+green (optional)  Battery: 2 * AA battery (not included)  Laser source: 2 green laser lines  Laser class: Class 2 (IEC/EN60825-1/2014)  Laser wavelength: 520nm  Horizontal line accuracy: 1mm/5m  Vertical line accuracym: 1mm/5m  Self leveling ranges: 30+3°  Working ranges: 15m  Power source: 2*AA batteries  IP rating: IP54  Operation temperature: -10℃-50℃  Storage temperature: -20℃-70℃  Item size:  Laser level: 90 * 65 * 91mm / 3.54 * 2.56 * 3.58in  Iron board: 100 * 60 * 12mm / 3.94 * 2.36 * 0.47in  Item weight: 327g / 11.53ounce  Package size: 120 * 90 * 110mm / 4.72 * 3.54 * 4.33in  Package weight: 362g / 12.77ounce    Packing List:  1 * Level Machine  1 * Wall-mounted Bracket  1 * Iron Board