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. Specifications Item Type: Distance Meter Material: ABS Color: As shown in the picture Product Size: Approx. 15.5x7x4.8cm / 6.1x2.8x1.9in Battery Parameters: 1 x 9V battery (not included) Measuring Range: 50 cm ~ 18 meters Error: Five thousandths Resolution: 0.01 m Maximum Measuring Distance: 18 meters Transmission Frequency: 40kHz Working Temperature: 0℃~43℃ Weight: Approx. 134g / 4.7oz Package List 1 x Distance Meter(Battery Not Included) 1 x Accessory 1 x English Manual