1. High bright and slim red light, Long-distance construction is clearly visible. All-aluminum one-piece precision casting, Outstanding craftsmanship quality.2. Ultra-wide double-sided LED screen, On various occasions, Clear display. Lightweight in control, Good-looking and lightweight.3. IP54 engineering-grade protection, Reinforced fuselage protection, Fearlessly protects against harsh challenges.4. Built-in high-capacity lithium battery efficient battery life, with Type-C charging interface, Fast charging with long-lasting power, Easy to eliminate range anxiety.LI1 Laser-Line ThrowAngle Meter, Real-time angle laser-projection line two in one. The revolutionary technology based on -electro-mechanical system and advanced software technology combine to achieve high precision measurement with accuracy better than 0.5 Multi-national imported components precision assembly, for the performance of the instrument plus, intelligent and accurate at the same time, construction to find the level easily.Product name: LI1 Laser-Angle Line Casting InstrumentLaser-wavelength: 660nmLaser-class: Class IIProtection level: IP54Indoor distance: less than equal 10mHorizontal accuracy: 1mm/5mVertical accuracy: 1mm/5mWorking temperature: -10~50Storage temperature: -20~55Battery specification: 730mAh rechargeable lithium batteryWorking mode: absolute angle + relative angleType: Angle Metercolor:Photo colorMaterial:Aluminum alloysize:120 x 35 x 20mmPackage Contents:1 x Single-Laser Angle MeterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.