Fangrui Product Details Advanced Body Measurement Technology: The Smart Body Tape Measure Is A Cutting-edge Tool For Fitness Enthusiasts And Health-conscious Individuals. Designed To Help You Track Your Body's Progress, This Tape Measure Integrates Seamlessly With The Fitdays App, Enabling You To Monitor Your Body Fat, Bmi, And Weight Effortlessly. The Retractable Ensures The Tape Is For Use, While The Abs Plastic Construction Promises And Reliability. Effortless Data Tracking And Sharing: With The Smart Body Tape Measure, You Can Easily Capture And Store Your Measurements, Making It A Valuable Asset For Fitness And Weight Loss Programs. The Bluetooth Connectivity Allows For Quick And Easy Data Transfer To Your Smartphone, Where It Is Synced With The Fitdays App. This Means You Can Monitor Your Progress Over Time, Share Your Achievements With Friends, And Receive Personalized Feedback To Help You Stay On Track With Your Fitness Goals. Designed For Convenience And Accuracy: The Sleek Design Of The Smart Body Tape Measure Ensures It Fits Comfortably In Your Hand And Is Easy To Use. The Tape Is Designed To Provide Accurate Measurements, Making It An Essential Tool For Tracking Your Body's Changes. Whether You're A Professional Athlete Or Someone Looking To Improve Their Health, This Body Tape Measure Is An Indispensable Companion For Anyone Committed To A Healthier Lifestyle. Due To Different Product Batches, The Appearance , Which Does Not Affect The Use Colour:as Shown Material:plastic Package Contents: 1 X Smart Body Tape Measure 1 X Charging Cable 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.