Features:Instant measurement of distance， area & volume with one button operation: YESWide measuring range: YESHigh accuracy: ÷2mm (0.079inch)Automatic calculation of Area and Volume: YESIndirect measurement by Pythagorean Theorem: YESSingle/Continous measurement: YESMax/Min distance tracking (display value): YESEasy Addition/ Subtraction of measurement: YESSet up front / rear benchmark: YESSelectable meter(m)， inch(in) and feet(ft): YESData store/ recall function: YESData Hold / Data clear function: YESAir Bubble Level: YES， IncludedEasy targeting with bright laser pointer: YESLarge LCD with backlight and multi-line display (4 lines): YESAuto correction and error report technology: YESBuzzer indication: YESBattery status Indication: YESIP54 protection (dust & splash proof): YESAuto / Manual power off function: YESMultifunction with intelligent calculation: YESCompact & handy design: YESCE， ROHS， FCC certificate: YESSpecifications:Measuring range: 0.2 to 40m (0.65 to 131ft)Acurracy: ÷2mm (0.079inch)Laser class: Class IILaser maximum output: <1MwDust & Splash proof: IP 54Laser Auto off: 30SPower Auto off: 3minOperation temperature: 0~40C (32~104F)Storage temperature: -10~60C (14~140F)Power supply: 2 x 1.5V AAA battery (We have to take away the batteries due to the policy of the shipping company)Weight (without battery): 130gDimension: 118*54*28mm (4.65*2.12*1.10inch)Packet content:1 X LASER DISTANCE METER1 X USER’S MANUAL1 X Pouch bag1 X Holding rope