The only electronic wheel with a steel frame! Digital display shows measurements up to 99,999 ft., 11 in. or 99,999.9 in tenths and metric. Magnetic sensors ensure reliable input. Other features include a backlight LCD, auto shut-off, add wheel radius for wall-to-wall measuring, 3/4˝ steel tubing frame, a built-in kickstand, and the handle folds down for compact storage. Wheel Circumference: 4 ft. Accuracy: 2˝ in 100', 99.8%. Memory: 8 measurement recall. Power: 2 ˝AA˝ Batteries (not included). Dimensions: 42˝L Extended, 21˝L Folded. Warranty: 2-years from the manufacturer.