Hope you will enjoy the time in our store.Features:100% brand new and high qualityWith laser pointer Foot/Meter display optionsMeasuring Range: 0.5m to 18mLCD screen with LED backlight Auto shutdown after 15 seconds without pressing any keySupport sum-up， multiplication of various measurement data. All stored measurement data can be cleared. Correction of errors: ''Error'' is displayed when the actual distance falls out of the measuring range Power supply: 1 x 9V Alkaline type 6LR61 Battery (Not included) Specifications:Material: PlasticColor: Yellow+BlackAccuracy: +/-0.5% Ultrasonic Frequency: 40 kHzWorking temperature: 0 ℃ ~ 43 ℃Dimensions: 123 x 55 x 38mm Laser beam: Wattage 1mW (mW =milliwatt) Wavelength: 650nm (nm =nanometer) Package includes:1 x Ultrasonic distance meterEnjoy the best day of your life.