Accurate measurements the tape holder converts the reading from a straight line to a circumference. In perimeter mode, traditional tape measures can have significant inaccuracy (up to 0.84 inches), while this smart body tape measure provides high precision with minimal deviation (as little as 0.01 inches or 0.1 centimeters), delivering consistent and reliable results.Easy to use the well-made, smooth anthropometric tape features a locking mechanism. Pull out the tape, wrap it around your body, clip it in place, and retract until the display shows the measurement. It's much more convenient than using a loose sewing tape.Track your progress the companion app records your measurement history and displays it in clear charts, covering 13 body parts and 12 body size metrics. By selecting any data point, you can view trends by week, month, or year, helping you better understand your body changes over time.Sync with popular fitness apps free app available 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 weight loss? This digital body measuring tape helps you track both. It pairs perfectly with compatible smart scales, using the same application for unified health tracking.Multi-functional use ideal for weight loss, fitness, waist training, sewing, 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: 10% to 80% RH (non-condensing)