Feature:1. High-precision LD red intense light is bright and clearly visible both indoors and outdoors.2. Smart touch buttons for sensitive operation: H key horizontal line switch, V key vertical line switch, OUT key oblique line function button.3. Able to open oblique line mode at any angle to satisfy the multi-scene work.4. The level automatically alarms when tilt more than 3, and self-leveling when tilt less than 3.5. Built-in 2 3000mAh 18650 lithium batteries provides super long continuous working time up to 8 hours.6. IP54 waterproof and dustproof, suitable for various house decoration conditions.Specification:Item Type: Laser Level Light Source: Germany LD red light, wavelength 532nmLight: 360 3D 8-LineLight Thickness: 1.5mmAccuracy: 0.2mmWorking Range: 25mBattery: 2 x 3000mAh 18650 lithium batteries (Removable)Working Time: 8HWaterproof Grade: IP54Working Temperature: 0-40CPackage List:1 x Laser Level 2 x 18650 Lithium Battery (Inside the laser level)1 x Charger (EU Plug 220V)1 x Lithium Battery Charging Base1 x Right Angle Projection Target Board