Features 1、MEASUREMENT FUNCTION: Distance measure adopt a variety of measurement modes to completely address daily measurement needs. Support single measurement, continuous measurement, area measurement, volume measurement, first Pythagorean, second Pythagorean, horizontal measurement, vertical measurement 2、SWITCHABLE MEASURING UNITS: Distance measure has four measuring units, easy to switch, m, ft, in, ft+/in(foot inch 1/16), very convenient to use 3、HD BACKLIGHT: The distance measurement device has a 2.4in positive display, HD backlight display, and can be used in low light, you can use with confidence 4、INTUITIVE SENSING: The 50M compact distance measurement tool use an electronic horizontal sensor to display the angle in real time, making the data more intuitive 5、WATERPROOF AND DUSTPROOF: The distance measurement tool has IP54 protecting, which effectively avoid dust from entering the machine and affecting the work, and prevent machine damage caused by splashing water Specification Item Type: Distance Measure Model: D3-50 Measuring Range: Approx. 0.05 ~ 50m / 0.2 ~ 164ft Measuring Accuracy: ±2 mm Display Accuracy: 1 mm Grade: Level 2 Power: <1mW Area Volume Measurement: Yes Pythagorean Theorem Measurement: Yes Addition and Subtraction: Yes Storage Function: Yes Continuous Measurement: Yes Maximum Min Measurement: Yes Multi Line Display: Yes Screen Size: 2.4in Waterproof Class: IP54 Operating Temperature Range: 0℃ - +40℃ Storage Temperature Range: -10℃ to +50℃ Battery: 3 x Rechargeable AAA battery 800mah Automatic Off Time: 30 Seconds later Automatic Shutdown Time: After 3 minutes Package List 1 x Distance Measure 1 x USB Cable 3 x Rechargeable Batteries 1 x Battery Storage Box 1 x Portable Rope 1 x User Manual 1 x Carrying Bag