Multiple measurements - linear measurement, circular measurement, arbitrary curve measurement, irregular surface measurement, cylindrical diameter measurement, accumulation and 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 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 microprocessor and precision encoder - these two components deliver accuracy within 0.5%, which is useful for calculating dimensional weight for shipping costs. Lightweight, pocket size - 35 grams, 2.1 x 0.6 inches (approximately 5.3 x 1.5 cm). Digital Tape Measure Dimensions: 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 Range: max. 324 feet. Backlit Time: 30 seconds. Charging Port: Type-C. Color: Black. Material: Metal. Package Contents: 1 x digital tape measure. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowed error is +/- 1-3 cm.