1HD display screen, data display clear, data can be added and subtracted. 2Reasonable data storage can go through the history data. 3Compact size and light weight, convenient to carry. 4Adopt LCD backlit display, convenient to read data in the dark. 5Easy to operate and maintain, superior performance. Features: HD display screen, data display clear, data can be added and subtracted.Reasonable data storage can go through the history data.Compact size and light weight, convenient to carry.Adopt LCD backlit display, convenient to read data in the dark.Easy to operate and maintain, superior performance.Specification: Material: Plastic & Aluminum alloy Weight: 145g/5.1oz Color: Blue Measurement range: 0.05-40m, 0.05-60m, 0.05-80m, 0.05-100m (Optional) Measurement accuracy: 2mm Laser grade: Class 2M II Laser type: 620-690nm,<1mW The measure of area: YES Volume measurement: YES Measurement of the Pythagorean theorem: YES Addition and subtraction method: YES Tracking measurement:YES Maximum and minimum measurement: YES Back light: YES Beep tips :YES Data removal: YES Data storage: 20 groups Dust and water: IP 54 Operating temperature range: 0~40 Storage temperature range: -20~65 Battery life :5000 ~ 8000 measurements Power supply: 2* AAA LR6 1.5V (NOT included) Laser Auto off: 30s Power Auto off: 3min Instrument size: 11.5*4.9*2.5cm/4.5*1.9*1inch Package List: 1* Digital Laser Rangefinder 1* Hanging cord