1、Motion distance measurement function, can also automatically calculate area and volume. 2、Large LCD screen with LED backlight. 3、Self-attached with laser pointer and 1 meter tape measure. 4、Handheld size and light weight, easy to carry and convenient to use. 5、High accuracy to two decimal places.Handheld LCD Ulasonic Distance Meter is a tool to quickly measure room and room area, whose linear measuring distance is within 0.5-18m. It is perfectly sui for home decoration, calculation of area and volume while buying air conditioners, and necessary for real estate agents or consuction workers. The ulasonic distance meter measures distance by launching ulasonic wave to the measured object and calculating the ulasonic roundip time. In combination with an external level, it can achieve simultaneous distance measurement and horizontal distance collation. Features: ol Motion distance measurement function, can also automatically calculate area and volume. Large LCD screen with LED backlight. Self-attached with laser pointer and 1 meter tape measure. Handheld size and light weight, easy to carry and convenient to use. High accuracy to two decimal places. Auto power off function, automatically shut down after 15 seconds, no need to press any button. Error correction: When the actual distance is beyond the measurement range, Error is displayed. Low power display function, foot/meter display options. /ol Specification: Condition: Brand New Material: Plastic Color: Green attery: 1* 23A 12V batteryExcluded Measuring Range: 0.5-18.288m Accuracy: +/0.5% Ulasonic Frequency: 40 kHz Working Temperature: 0°C-43°C Laser beam: 1mW power Wavelength: 650nm Package Weight: Approx.110g/3.9oz Package List: 1 * Ulasonic Distance Meter 1 * User Manual