1.Multi-function: OurElectronic Tape Measure has up to 10 practical functions, such as straight line measurement, round measurement, arbitrary curve measurement, irregular surface measurement, cylindrical diameter measurement, accumulation/subtraction of 10 historical records, measurement prompt sound, measurement breathing light , Unit switching, etc.; easily cover your various measurement needs.2.99m Ultra-long Distance Measurement: A single 0-99m practical distance measurement, and a maximum of 99 meters (automatic accumulation) ultra-long distance measurement.3.Measuring Data- Millimeter-level precision measurement data can be automatically accumulated and subtracted, and 10 groups of historical records can be called at any time, which is convenient and practical.4.Lightweight & Portablewhich is convenient for you to carry and measure at any time.5.High-tech Microprocessor: Adopts ultra-low power consumption microprocessor to achieve ultra-long standby and battery life.