High Accuracy Digital Laser Distance Meter Range Finder    Main features: - High accuracy The measuring range of digital laser distance is from 0.05m to 40m, while its accuracy is 2mm, very quick, accurate and efficient - Various measure functions It supports continuous measurement function, Pythagorean measurement function, area measurement function, volume measurement function, add and subtract measurement function - High-quality material Reinforced shell, which is dustproof and IP54 waterproof, ideal for construction use in the outdoor environment - Wide applications You can quickly measure the size of walls, ceilings, floors, rooms, building heights, area, volume, distance, length, etc. It is widely used in construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc. - Portable Handheld design makes it portable and lightweight to take for measuring - Unit conversion Support unit selection of meter, inch and feet to satisfy different reading needs - Historical reading Measuring data will be stored automatically, you can check the most recent measurement freely - Large LCD with backlight Help you see clearly in the darkness, it also supports auto power off and low battery indication Specifications: - Measuring accuracy: 2mm - Measuring range: 0.05m - 40m - Waterproof: IP54 - Measuring unit: meter / inch / feet - Laser type: 620 - 690nm - Laser class: second class - Single measurement time: 0.25s - Power: 2 x AAA ( not included )   Package weight: 0.192 kg Product Size(L x W x H): 11.00 x 4.00 x 2.50 cm / 4.33 x 1.57 x 0.98 inches Package Size(L x W x H): 16.50 x 10.00 x 4.50 cm / 6.5 x 3.94 x 1.77 inches Package Contents: 1 x Laser Distance Meter, 1 x English User Manual, 1 x Anti-lost Rope