HIGH-VISIBILITY BACKLIGHT DISPLAY-The angle finder is equipped with a backlight LCD display , even in poor eyesight or dark areas,which provides high visibility. Also when the digital angle finders is inverted, the display will automatically reverse. In addition, this digital level will automatically turn off after 3 mins of no operation to save battery. WATER-PROOF DUST RESISTANT-Magnetic angle finder is certified IP54, which is water-proof and dust-resistant. In addtion, this digital level angle finder is allowed works in temperatures from 14F to 122F (-10C to 50C). No matter works in outdoor or indoor, summer or winter, our digital protractor will provides the accurate measurement for you. STRONG MAGNETIC DESIGN-The digital angle gauge is equipped with a strong magnetic that can firmly adhere to any ferromagnetic surfaces, such as conduits, pipes, saw blades, pipes, etc. Ensuring accuracy, preventing detachment, and improving your work efficiency. HIGH-PRECISION MEASUREMENT-360/490 measure angle, the measured value on the display is automatically adjusted, with accuracy of 0.2 and resolution of 0.05 to ensure accurate measurement every time. One botton with two functions. Short press the HOLD/Tilt% button, the display will hold the readout date, making it easier to measure in narrow spaces and inverted situations. Long press the HOLD/Tilt% button, the dispaly will switch between angle and Tilt%. PORTABLE PRACTICAL-There are two measurement modes which are absolute measurement and relative measurement. You can easily chcke these two modes by pressing ZERO button. Our angle finders are compact size and light-weight, which can meet most woodworking, operation, home maintenance and decoration needs. In addition the digital angle finder comes with two AAA batteries and a storage bag, will a great gift for men at festivals.