Portable LCD Digital 18m Ultrasonic Laser Distance Measure Meter Tester The product is shipped based on the color or size of the main image of the product page. Features: 100% brand new and high quality With laser pointer Foot/Meter display options Measuring Range: 0.5m to 18m LCD screen with LED backlight Auto shutdown after 15 seconds without pressing any key Support 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: Plastic Color: Yellow+Black Accuracy: +/-0.5% Ultrasonic Frequency: 40 kHz Working temperature: 0 ? ~ 43 ? Dimensions: 123 x 55 x 38mm Laser beam: less than 1mW (mW =milliwatt) Wavelength: 650nm (nm =nanometer) Package includes: 1 x Ultrasonic distance meter