Compared with other red laser levels, the brightness of the laser bubble level tool is increased by three times, which easily projects a clearer and sharper cross green laser line. In addition, it consumes less energy and is very stable indoors. SELF-LEVELING 2 SELECTABLE MODES In Automatic mode, the self-leveling mode is available with a slope range of 4 . the laser automatically levels itself. Otherwise, Beyond the 4 inclination, the laser beam flashes to trigger an alarm to show that it is no longer level. Lock the pendulum to switch to manual mode, the automatic leveling function is deactivated and locked so that the device can be used from all angles HIGH VISIBILITY AND PRECISION Thanks to the powerful laser diode, laser lines are extremely visible and easily project a bright red cross at a 110 angle. Accuracy of the horizontal line: 2 mm / 10 m radius. Precision of the vertical line: 2 mm / 5 m (radius). Scope: 15 meters. IDEAL FOR CONSTRUCTION WORK it is also can be mounted on a 1/4 "tripod (not included). Can be rotated 360 freely for your work. / P ROBUST DURABILITY ANTI-FALL IP54 protection against dust and water guarantees work in difficult conditions. Six-sided 1 meter above ground falls without loss of functionality or precision. Note: the device is not suitable for extreme sunlight Model: LV1 Laser: Green Beams Laser class: Class 2 (IEC / EN60825-1 / 2007) 1 mW of power Laser wavelength: 635 nm Leveling accuracy: 1.5mm Leveling / compensation range: 4 1 Working distance (line): horizontal line 10M (33Ft) / vertical line 5M (16.5Ft) Handle material: ABS + TPR rubber Protection level: IP54 Quantity: 1 piece Note: this does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!