Best Use: Compact and convenient design provides excellent working experience, with backlit LCD display for easy and clear readings. Easy positioning with bright laser pointer. USB charging is convenientto use. Superior Accuracy: Indicators for measuring baseline/battery level/tone signal/signal strength. Fast distance, area and volume measurement, simple operation, measuring range 30 m, high accuracy: 3 mm. Multiple Settings: 3 units of measurement: m/inches/feet, buzzer indication, manual off/45 seconds no operation auto off, 15 seconds laser auto off function. Ultra-mini pocket size for a portable experience. Multiple measurement modes: distance/area/volume/single/maximum/minimum/continuous measurement and 3 indirect Pythagorean theorem measurements. Comes with a wrist strap and pocket design for easy portability. Wide range of applications: it can be used in construction and industry, especially in large areas such as rooms, apartments, buildings, buildings, factories, warehouses, etc.