SNDWAY SW-100G Green lLght Digital Laser Tape Sensor Range Finder Feature 1.Instant measurement of distance, area & volume with one button operation: YES 2.Self Calibration: YES 3.Wide measuring range: YES 4.High accuracy: ±2mm (0.079inch) 5.Automatic calculation of Area and Volume: YES 6.Indirect measurement by Pythagorean Theorem: YES 7.SingleContinous measurement: YES 8.MaxMin distance tracking (display value): YES 9.Easy Addition Subtraction of measurement: YES 10.Set up front rear benchmark: YES 11.Selectable meter(m), inch(in) and feet(ft): YES 12.Data store recall function: YES 13.Data Hold Data clear function: 30 units 14.Air Bubble Level: YES, Included 15.Easy targeting with bright laser pointer: YES 16.Large LCD with backlight and multi-line display (4 lines): YES 17.Auto correction and error report technology: YES 18.Buzzer indication: YES 19.Battery status Indication: YES 20.IP54 protection (dust & splash proof): YES 21.Auto Manual power off function: YES 22.Multifunction with intelligent calculation: YES 23.Compact & handy design: YES 24.CE, ROHS, FCC certificate: YES Specification 1.Measuring range： 2.H-D710A: 0.05-70M 3.H-D510A:0.05-50M 4.H-D100A:0.05-100M 5.H-D120A:0.05-120M 6.Accuracy:±1.5mm 7.Display screen:2.2 inch