Features: 1[LASER RANGING] This distance finder adopted ultrasonic technology with precise induction accurately and efficiently measures the distance. It can measure distances in a straight line from 0.5m to 18m area. 2[MULTIPLE MEASUREMENT FUNCTIONS] Continuous measurement area measurement volume measurement and Pythagorean measurement. Real time measurement mode measuring wall and other surfaces. 3[CLEAR MEMORY FUNCTION AND ERROR CORRECTION TECHNOLOGY] Clear memory function allows you to quickly delete all stored measurement values. Correcting the error means that the range finder indicates that the measured distance is too long or too short. 4[WIDE APPLICATION] It is very suitable for indoor and outdoor measurement construction measurement woodworking measurement interior decoration etc. 5[EASY TO USE] Compact size and portable design it fits comfortably in the hand and easily in the pocket convenient to carry. The error is small the accuracy is high and it is easy to operate. Specification: Item Type: Distance MeterMaterial: ABSColor: As shown in the pictureProduct Size: Approx. 15.5x7x4.8cm / 6.1x2.8x1.9inBattery Parameters: 1 x 9V battery (not included)Measuring Range: 50 cm ~ 18 metersError: Five thousandthsResolution: 0.01 mMaximum Measuring Distance: 18 metersTransmission Frequency: 40kHzWorking Temperature: 0~43Weight: Approx. 134g / 4.7oz Package List: 1 x Distance Meter(Battery Not Included)1 x Accessory1 x English Manual Note: 1. Please allow 12in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.