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 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 0.5 Multi-national components precision assembly, for the performance of the instrument plus, intelligent and accurate at the same time, construction to find the level . Product name: LI1 Laser-Angle Line Casting Instrument Laser-wavelength: 660nm Laser-class: Class II Protection level: IP54 Indoor distance: less than 10m Horizontal accuracy: 1mm/5m Vertical accuracy: 1mm/5m Working temperature: -10~50 Storage temperature: -20~55 Battery specification: 730mAh rechargeable lithium battery Working mode: absolute angle + relative angle Type: Angle Meter color:Photo color Material:Aluminum alloy size:120 x 35 x 20mm Package Contents: 1 x Single-Laser Angle Meter Only 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.