[High Precision Laser Measurement] The accuracy of this tape measure is ±3mm. It can be used for continuous measurement and the accurate distance can be read in the effective area during movement. Use Class II laser, limited to 1MW continuous and safe for daily use. IP54 waterproof class and dustproof function protect the laser measuring tape up to maximum range. The wristband allows you to hold the measuring device [Digital measurement in multifunction mode]. The memory capacity gives you 50 groups of reference dates so you don't waste time taking notes. The Laser Range Finder can also calculate distance, area, volume and the Pythagorean Theorem. Advice: Pay attention to the reference points when measuring [rechargeable and LCD laser measuring tool] This laser distance meter is powered by energy-saving and environmental protection method. The laser automatically turns off after 30 seconds and the LCD screen turns off after 180 seconds of inactivity to save power. Four-wire LCD display and high-resolution backlight make data comparison clear and convenient. Belt clip allows you to take your device with you. [Construction tools are widely used for realtor gifts] Laser measure is ideal for measuring areas or objects including Rooms, Apartments, buildings, factories, garages, desks, chairs, sofas, cabinets, floors, etc.