Using an optical lens, high quality international laser head components, precise measurement, fast speed, low power consumption and long service life.Measure accurately Millimetric quantization and observe while measuring with a measuring instrument to ensure a millimeter measurement accuracyThe standard Class 2 laser of the laser module is reliable and ecological, stable, professional optical system used inside and out, and integrated intelligent optical compensation system to meet various needs of measured.Humanized intimate design, humanized design, universal data cable for Android mobile phone, you can load at any time anywhere.USB charging support, fast loading, external battery support / computer / USB car chargingwhen measuring the distance, keep the drop d Water from the horizontal bubble in the middle to make sure that the rangefinder is at the ground level, so that the measurement is more precise. Nine keys are more convenient to use, 9 keys a key a function, easy to understand and more practical. Waterproof body, resistance to falls and shocks The entire machine is made of high resistance ABS engineering plastic, which is not fragile once fallen from a high place. The buttons are made of soft silica gel, which makes it very well. Product settings:Specification template: H-40Measurement range: 0.03-40measurement accuracy: 1, WMOMinimum display: 1 mmUnique measurement time: 0.1-4 secondsMeasuring unit: M meter) / ft (feet) / in (inches)laser quality: 635NMLaser Type: