This unit contains a Class II Laser with 1mW output 1/16" accuracy and up to 330 foot measuring range. Measuring units-0.000 m, 0.00 ft, 0'00" 1/16, 0 in 1/16. Measurements per set of batteries-up to 10000 Bluetooth 4.0 for transferring measurements into desired software Last 10 measurement memory, Dimensions : 116 x 44 x 26 mm / 4.57 x 1.73 x 1.02 in Pythagoras function for indirect height or width measurements. Operating temperature range:14°F to 122°F / -10°C to 50°C.Protection class:IP 54, dust & splash protected Intelligent automatic end piece for hard to reach corners