SNDWAY SW T40 T60 T80 T100 Laser Distance Meter Mini Digital Range Finder Profeional Laser Trena Tape Rangefinder More SNDWAY laser rangefinders pick for you! Features Instant measurement of distance, area & volume with one button operation: YES Self Calibration: YES Wide measuring range: YES High accuracy: 2mm (0.079inch) Automatic calculation of Area and Volume: YES Indirect measurement by Pythagorean Theorem: YES Single/Continous measurement: YES Max/Min distance tracking (display value): YES Easy Addition/ Subtraction of measurement: YES Set up front / rear benchmark: YES Selectable meter(m), inch(in) and feet(ft): YES Data store/ recall function: YES Data Hold / Data clear function: 30 units Air Bubble Level: YES, Included Easy targeting with bright laser pointer: YES Large LCD with backlight and multi-line display (4 lines): YES Auto correction and error report technology: YES Buzzer indication: YES Battery status Indication: YES IP54 protection (dust & splash proof): YES Auto / Manual power off function: YES Multifunction with intelligent calculation: YES Compact & handy design: YES CE, ROHS, FCC certificate: YES Specification Measuring range: 0.05~40m/0.05~60m/0.05~80m/0.05~100m Acurracy: 2mm Laser cla: Cla II Laser maximum output: <1Mw Dust & Splash proof: IP 54 Laser Auto off: 20s Power Auto off: 3min Operation temperature: 0~40C (32~104F) Storage temperature: -10~60C (14~140F) Power supply: 2 x 1.5V AAA battery (Not included) Weight (without battery): 90g Size : 112*50*25mm Package Included 1 X Laser distance meter 1 X English user's manual 1 X Hand strap 1 x Gift box 1 x Reflector Tips: the product does not include batteries.