GREATER ACCURACY: The indicator is used to measure the reference mark / battery level / buzzer indication / signal strength. Our product can quickly measure distance, area and volume. The measuring range is 30 and the accuracy can reach 3mm. BEST OPERATION: Convenient and compact design provides excellent portable operation experience. The LCD display with backlight is clear and you can read the data easily. Bright laser pointer easily aims at the target. MULTI-MEASUREMENT MODES: There are multi-measurement modes. They include distance/area/volume/single/Max & Min/continuous measurement and 3 kinds of indirect measurement by Pythagorean theorem. Comes with a wrist strap and portable design, it is convenient to carry. VARIOUS SETTINGS: There are 3 units of measurement: m / in / ft. At the same time, our product comes with a buzzer indicator. With manual power-off, 45s automatic shutdown without operation and 15s laser automatic shutdown function, our product is easy to use. WIDE APPLICATION: Our product can be used in construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc. Features: Measuring range: 0.03-30m Measurement accuracy: 0.3mm Display: LCD with backlight Laser class: Class II Laser wave length: 620-670nm Laser output: less than 1mW Waterproof and dustproof grade: IP54 Laser Auto Off: after 15 seconds Auto Power Off: after 45 seconds Operating Temperature: 0~40 Celsius / 32~104 Fahrenheit Storage Temperature: -20~70 Celsius / -4~158 Fahrenheit Charging Voltage: 5V Item Weight: 25g / 0.88oz color: white