Sndway SW-E40 40m 131feetlaser range finder distance tape measure roulette meter measuring the trena rangefinder Electronic ruler meters rangefinders tool instruments tester rulers Remind: 1.We will take away the batteries from the package because the shopping company can not deliver the battery. 2. We provide valid tracking number for every package. 3. We provide 1 year warranty for all the products. 4. For Ruian customer, we will provideManual in Ruian. 5. Each procut included one piece reflective plate as below: It is usedunder the following accasions: A, in the case ofstrong sunlightortarget reflection is not good, please use the reflector B, reflecting plate hasgood reflection effectand measurement on the table or floor, oras a baffle.C, it can beused in roughuneven wallsandastigmatism surface(gla lens stainle steel), the reflected signal is not good or interfere with the strengthening of local signal reflectionFeature:Brand: SNDWAYModel number : SW-E40Instant measurement of distance, area & volume with one button operation: YESSelf Calibration: YESMeasurement range: 40m (131feet)Measurement 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 / middle/rear benchmark: YESSelectable meter(m), inch(in) and feet(ft): YESData store/ recall function: YESData Hold / Data clear function: 100 unitsAir 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: YESPower type : battery-poweredCE, ROHS, FCC certificate: YESSpecifications:Measurement range:0.05~40mAcurracy: 2mmLaser cla: Cla IILaser maximum output: <1MwDust & Splash proof: IP 54Laser Auto off: 20sPower Auto off: 3minOperation temperature: 0~40C (32~104F)Storage temperature: -10~60C (14~140F)Power supply: 2 x 1.5V AAA battery (Not included)Weight (without battery): 108gDimension: 118*54*26.5mmPacking1 X LASER DISTANCE METER1 X EngLish USER'S MANUAL1 X Portable bag1 X Hand strap1 x Gift box1 x Reflector