Features: IP54 Dust Protect/Splash proof 4.0 Bluetooth interface with Krisbow Meter Mobile Application Area, Volume Calculations Indirect measurement using Pythagoras Indirect measurement using tilt sensor Angle measurement using tilt sensor ( 65) Addition/Subtraction Continuous Measurement Min/Max Distance Tracking Timer (self-triggering) Laser continuous Stake out function Display illumination and multi line display Multifunctional end piece Tripod thread Beep indication Article No. Description Laser Distance Meter 150M Specification Measuring Range 0.05 to 150m (0.15 ft to 492.1 ft) Measuring accuracy 1.5 mm (0.06 in) Resolution 1 mm Laser Class Class II (635 nm, Measuring units m, in, ft Auto Power Off After 3 min Auto Laser Off After 30 sec Data Storage 20 groups Range of bluetooth 10 m Keyboard Type Super Soft-Touch (Long life) Operating Temperature 0 to 40C(32 to 104F) Storage Temperature -10 to 60C (14 to 140F) IP Protection IP54 Analysis software Krisbow Meter Mobile Application Power Supply 2x1.5V AAA battery Battery Life Up to 8,000 measurement Unit Dimension (mm) 135 x 53 x 30 Packing Dimension (mm) 175 x 100 x 70 Nett/ Gross Weight (kg) 0.210/ 0.450