DinoFire Laser Measure 131FT M/in/Ft Super Precise Digital Laser Tape Measure Mute with Bubble Level, Backlit LCD Distance, Area, Volume?Pythagorean Anti-Crash Laser Measuring Device Tool Meter

3 YEARS WARRANTY: Free replacement or refund in 3 years, lifetime technique support Measure modes: Length, Area, Volume?Pythagorean, Double Pythagorean Features: ?Backlit mode, large font for easy reading even in low light condition ?With mute function ?10 groups data memory function ?Addition and subtraction ?480s Automatic shutdown to save energy ?Anti-crash ?IP54 waterproof & dustproof Specification: Laser Power: Class 2 Max radiant power: <3mW Material : ABS, Rubber Measure Range : 131ft/40m Accuracy : ±0.05 inch Battery Type : 2 x AA 1.5V (Not Included) Emitted wavelength: 635nm-650nm Size :4.7 x 2 x 1.2inch (L*W*T)