[Rechargeable Battery] The laser measuring device has a built-in rechargeable lithium battery, no need to replace the battery, and can be powered by a mobile power supply, computer, car charging or DC plug via USB Type-C. Very environmentally friendly and durable [High Precision] Our high-precision laser measuring instrument can instantly and reliably measure distances up to 40 meters with an accuracy of 2 mm. Compared with traditional measuring tools, digital tape measures are more accurate and convenient [HD Display and Clear Reading] The Hychika laser measuring tool has a large backlit screen to provide users with better visibility. The silent setting can meet your different needs. In addition, the 3 interchangeable units between m/in/ft are designed for people with different reading habits. [Diverse Measurement Modes] The laser distance meter has a variety of functions, supporting area, distance, length, volume, continuous measurement and Pythagorean measurement to meet different measurements. Widely used in interior decoration, DIY design, construction, logistics, warehouses, etc. [Small and Stylish] The HYCHIKA laser measuring instrument is portable and rechargeable. Its surface material is composed of aluminum alloy + ABS, with high-grade appearance, anti-scratch advantages and sturdiness Because some materials (such as water, glass) will scatter or absorb laser light, the lens of the laser measuring instrument will not be able to read accurately, resulting in screen flickering or "wrong" readings when the laser beam cannot lock onto the surface it is pointed at. This is not a tool failure because it will try to capture and record the reflected laser beam. If necessary, a suitable laser target (such as white paper) needs to be placed to assist in the measurement.