1、Automatical Backlight: The backlight of this instrument is automatically turned on and off. After the instrument presses any key, the backlight will continue to turn on for 15 seconds. After 15s, the instrument will automatically turn off the backlight if there is no operation to save power. 2、Product Features: Continuous measurement, able to measure area, volume, Pythagorean, addition and subtraction, area volume addition and subtraction, maximum and minimum function, automatic calibration function, sound prompt. 3、High Accuracy: Has high measuring accuracy, with 99 groups of storage. Short ranging time, intuitive distance display, low power consumption, etc. 4、Simple Carrying: Designed to have a light weight and a compact size as well, the laser range finder is simple to carry. It is very suitable for outdoor measurement use. 5、Usage Scenarios: Widely used in construction, interior decoration, road planning, warehouse logistics, housing acceptance and other industries. Item Type: Laser Rangefinder Material: ABS Gross Weight: 150g / 5.3in Product Size: 10.5x4.3x2.5CM / 4.1x1.7x1.0in Battery (delivered without battery): 2pcs AAA Scope of Application: Ranging Product Functions: Continuous measurement, area measurement, volume measurement, Pythagorean Measurement, addition and subtraction measurement, area volume addition and subtraction, maximum and minimum function, automatic calibration function, sound prompt Distance Measurement Accuracy: ±(2mm+dx1/10000) Laser Type: Class 2 630-670nm, <1mW Number of Storage Records: 99 Automatically Cut Off the Laser: 20 seconds (single measurement) Automatic Shutdown: 150 seconds Full Power Working Time: 4000/8000 times Storage Temperature Range: -20℃-60℃ Operating Temperature Range: 0℃-40℃ Storage Humidity Range: 20%-80%RH Battery Charging: Not rechargeable Angle Measurement: logistics level bubble Usage Scenarios: Widely used in interior decoration, interior design, architecture (rooms, buildings, factories, warehouses), etc.; Use Places: construction, interior decoration, road planning, warehouse logistics, housing acceptance and other industries, widely used; 1 x Distance Meter 1 x Rope 1 x Storage Bag 1 x Instruction Manual