Features:_x000D_ Output 12 laser lines for finer positioning, with self-leveling system, flexibility and stability._x000D_ 1/4" screw size for easy connection, it can be used with tripod to adjust the working height of the machine._x000D_ Watreproof and dustproof, suitable for both indoor and outdoor use._x000D_ Adopts optical glass, K9 material, fine transmission, with clear laser light._x000D_ Equipped with self-test calibration function, 3 automatic leveling, but if the angle is over 3, the laser light will keep blinking reminding you to reset them on a flat ground._x000D_ Rotation knob design, clockwise rotate to open it, anticlockwise rotate to close it._x000D_ Two touching buttons design, one OUT/H button, one V button, horizontal line and vertical line with a clearly division._x000D_ The button is wear resistant, with high sensitive to switch the line mode quickly, and with comfortable hand feeling._x000D_ Easy to carry with the case, providing quick and convenient mobility and storage._x000D_ Totally two types for you to choose: one battery type and two batteries type, you can choose according to your demands._x000D_ Note:_x000D_ The laser output maker is located on the output hole._x000D_ Do not stare directly at the laser light._x000D_ Do not disassemble the instrument and perform internal repairs by yourself._x000D_ This instrument meets the laser radiation safety rating standard._x000D_ Specifications:_x000D_ Name: Laser Level_x000D_ Main material: plastics+metal_x000D_ Battery(one battery type or two batteries according to your selection):_x000D_ One battery type: 1 * rechargeable battery, 3.7V, 4800mAh (included, you will find there are two 18650 batteries inside if disassemble it)_x000D_ Two batteries type: 2 * rechargeable battery, 3.7V, 4800mAh (included, you will find there are two 18650 batteries inside if disassemble one)_x000D_ Laser ray: 3D, 12 lines_x000D_ Range: 30m_x000D_ Laser lines accuracy: 0.2mm/m_x000D_ Laser light color: green light_x000D_ Self-levelling-range: 3_x000D_ Leveling time: 4s_x000D_ Laser class: 2_x000D_ Working temperature: -10 to 40_x000D_ Storage temperature: -20 to 70_x000D_ Moisture: 90%_x000D_ Continous time: 3-9 hours_x000D_ Item size: 137 * 110 * 217mm / 5.39 * 4.33 * 8.54in_x000D_ Package size: 230 * 185 * 160mm / 9.06 * 7.28 * 6.30in_x000D_ Package weight: 1200g / 2.65lb_x000D_ Packing List (One battery type):_x000D_ 1 * Level Machine_x000D_ 1 * Battery_x000D_ 1 * Power Adapter_x000D_ 1 * Carrying Bag_x000D_ OR_x000D_ Packing List (Two battery type):_x000D_ 1 * Level Machine_x000D_ 2 * Battery_x000D_ 1 * Power Adapter_x000D_ 1 * Carrying Bag