Feature:1. HIGH ACCURACY AND UNIT SWITCHABLE: The measurement unit can be switched between mm, in, ft, using laser accurate technology, accuracy up to 1.5mm(0.06in)2. VARIOUS MEASUREMENT FUNCTIONS: Support area volume calculation, hook law measurement, addition and subtraction measurement, maximum and minimum value measurement, continuous measurement3. RUGGED DESIGN: Aluminum alloy housing, IP54 waterproof rating and dust resistance to maximize the protection of the laser rangefinder4. LCD BACKLIGHT AND MUTE SETTINGS: The large backlit screen gives you better visibility in dark areas; The mute setting lets you turn the measurement beep on or off at will, and is suitable for use in quiet places such as libraries and classrooms5. WIDE APPLICATION: Laser rangefinder is the ideal choice for home, construction and industry, especially in large areas such as rooms, apartments, buildings, properties, factories, warehouses and so onSpecification:Item Type: Laser Distance MeterAccuracy: 1.5mm(0.06in)Measurement Unit: Mm, in, ftLaser Type: Class 2 635nm, <1mWArea Volume Calculation: SupportedPythagorean Law Measurement: SupportedPlus Minus Measurement: SupportedMaximum Min Measurement: SupportedContinuous Measurement: SupportedDisplay Backlight: SupportedMulti Line Display: SupportedBuzzer Tip: YesWater Proof and Dust Proof: IP54Battery: 1 x 702020 polymer lithium battery 200mAhBattery Life: About 4000 single measurementsOperating Temperature: 0 to 40(32 to 104)Storage Temperature: -10 to 50(14 to 122).Package List:1 x Laser Rangefinder1 x Charging Cable1 x Lanyard1 x User Manual