Etekcity Laser Distance Measurer Meter Tape, 50M/164-Feet Precision Laser Technology: Class II Laser, measuring up to 164ft (50m) and accuracy within 0.08in (2mm). Device measures in meters, feet, and inches One button operation including continuous mode and measurement memory; 50 measurements storage Six Calculation Functions: Area, Height (Pythagorean Theorem), Volume, Area Summation, Addition/Subtraction, and Stake Out Function Compact Design: Built to be portable and durable for versatile use and can firmly rest on any flat surface Powerful Backlit LCD display included;3 line display; 2 Year Warranty