Accurate Long-Distance Measurement: Capable of measuring up to 328ft with an accuracy of 0.5%, ensuring millimeter precision for everyday tasks. Versatile Measurement: Suitable for measuring curved, flat, diameter, or irregular objects. Ideal for home customization, body measurements, tailoring, and woodworking. Measure with Ease: Smooth roller design enables instant data display and quick results. Switch between 5 modes to measure cylindrical objects by circumference or navigate obstructed edges. Efficient Data Management: Features auto add/subtract function for multiple measurements, manual data storage, and history lookup. Efficient Power: Equipped with a 200mAh Type-C rechargeable lithium battery, providing 180-day standby and 6 hours of continuous use. Automatically powers off after 3 minutes of inactivity to conserve energy. Note: Measurements include the path of the rollers plus an additional 1/2 inch from the ruler's body length. Color: Black Material: Plastic Package Contents: 1 x Digital Tape Measure Note: The package includes only the items listed above. Light reflection and display differences may cause slight variations between the image and the actual product color. Measurement error tolerance is +/- 1-3cm.