Features: 1. Self leveling when tilt angle is over 3 degree. 2. Automatically alarm (laser flashing, buzzer beeping) when the self leveling range is exceeded. 3. Magnetic damping compensation system ensures fast leveling time. 4. Laser point to the ground for machine positioning. 5. Horizontal / vertical / cross lines measurement. 6. 360 degree rotatable base with fine-tuning components makes the machine quickly finds the target. 7. Can be used with a tripod to adjust the height of the laser spirit level. 8. Using semiconductor laser tubes with a wavelength of 650nm, the laser lines are clear and bright. Specification: Line color: Green Number of line: 2 line, 3 line, 5line (Optional) Power supply: AC 100-240V or built-in lithium battery Material: ABS housing Laser wavelength: 650nm Bag size: 21 x 17 x 23cm / 8.2 x 6.7 x 9.0in Package weight: Approx. 1374g/48oz Package list: 1 x Laser Spirit Level 1 x Green Light Eyeglasses 2 x Lithium Battery 1 x Power Adapter 1 x Black Bag 1 x User Manual Note: Please kindly make a note if you need any plug adapter. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1、Self leveling when tilt angle is over 3 degree. 2、Automatically alarm (laser flashing, buzzer beeping) when the self leveling range is exceeded. 3、Magnetic damping compensation system ensures fast leveling time. 4、Laser point to the ground for machine positioning. 5、Horizontal / vertical / cross lines measurement.