Dimensions: 6.1in x 2.76in x 1.77in(15.5cm x 7cm x 4.5cm)Color: Black&Orange Unit Measurer Distance: 0.5-18M Measurer Distance: 18M Sum of Maximum Distance: 180.00M Maximum Calculate Volume: 1800.0cubic meters Battery: 1 x 9V Battery (Not Included)Working Frequency: 40KHzWorking Temperature: 0¡ãC ~ 43¡ãCUnit of measurement: Feet or Meters Specification are typical Individual units might vary Specification are subject to change and improvement without notice Area， volume， addition， subtraction， caculation， data storage， feet/meter Range 2 to 60ft(0.55 to 18M) LCD Display Screen: 1.8" LCD with backlight Accuracy: ¡À0.5%¡À1CM Resolution: 1CM or 1/2InchPacking List:1 x Distance Measurer Laser Point1 x English User Manual