The laser rangefinder is connected with the "MI Home" application In the "MI Home" application, set the "post benchmark" or "former benchmark" of the laser rangefinder The laser rangefinder currently only supports meters and feet as units, not centimeters, millimeters, and inches. Parameter Product net weight: 36g Lithium battery: 3.7V=200mAh Screen: 0.96 inch OLED screen Bluetooth transmission distance: about 8m Charging parameters: 5V-1A Charging time: about 100min Automatic shutdown time: 180s Automatically turn off the laser time: 30s Storage temperature: -20℃-60℃ Storage humidity: 20%-80%RH Measuring range: 0.05-30m Measurement accuracy: ±(2mm+d*one ten thousandth*) Minimum display unit: m/ft Laser type: wavelength 630-650nm Working power: 0.7W (MAX) Working temperature: -10℃-60℃