Multiple measurements - linear measurement, circular measurement, arbitrary curve measurement, irregular measurement, cylindrical diameter measurement, accumulation/subtraction of 10 historical records, measurement prompt sound, measurement breathing light, unit switching. Easily meet your daily measurement needs. Rolling Electronic Tape LCD Digital Screen - Roll anything you need and you can easily read the results from the LCD display. No need to worry about tiny graduations on traditional rulers, suitable for tailors, students, and the elderly. 324 Feet Long Measuring Tool - Digital tape measure supports single range measurement and cumulative distance measurement up to 300 feet High-tech microprocessor and precision encoder - these two components you achieve results of ±0.5%, which is very useful for e-commerce to calculate dimensional weight for shipping costs. Light weight, pocket size - 35 grams, diameter 2.1x0.6 inches (approximately 5.3x1.5 cm) Digital Tape Measure Dimension: 2.09 x 0.59 inch(diameter x thickness) Digital Tape Measure Screen: 1.8 inch VA LCD display Single Range: max. 29.5 feet Accumulative Rang: max. 324 feet Backlit Time: 30 - Charging Port: Type-C Colour:black Material:Metal Package Contents: 1 set x easy smart tape Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.