Accurate measurements the tape holder converts the reading from a straight line to a circumference. In perimeter mode, standard tape measures can have significant inaccuracy (up to 0.84 inches), while this digital body tape measure provides more precise results with minimal deviation (as little as 0.01 inches or 0.1 centimeters), delivering consistent and reliable measurements. Easy to use the well-constructed, smooth anthropometric tape features a locking mechanism. Pull out the tape, wrap it around the body, secure it in place, and retract until the display shows the measurement. This process is much more convenient than using a loose sewing tape. Track your progress the compatible app records your measurement history and displays it in clear charts, covering 13 body parts and 12 body dimensions. By selecting any metric, you can view trends over time by week, month, or year, helping you better understand your body changes. Sync with popular fitness apps available as a free download on the App Store and Google Play. The tape measure seamlessly syncs with leading fitness platforms, including Apple Health, Google Fit, and Fitbit. Why is perimeter measurement as important as weight during a weight loss journey? Having a reliable tool makes all the difference. This digital body tape measure works well alongside other smart health devices. Both use the same application for unified data tracking. Multifunctional use suitable for weight management, fitness training, waist training, sewing projects, and clothing size measurement. Product name: Intelligent health ruler Product dimensions: 66 x 66 x 28 mm Resolution: 0.1 cm Measurement accuracy: 2% Maximum measuring range: 1.5 m Operating temperature: 0C to 50C Working humidity: 80% RH