COMPREHENSIVE & PRECISE MEASUREMENTS: In contrast to other weight scales with 4 electrodes that only measure half of the body, runstar digital scale uses 8 electrode segmented BIA technology to measure the body in five sections (limbs and torso). This leads to a more real and precise analysis of body composition NO MORE LOOKING DOWN: Runstar bathroom scale features a large, clear 4.1x2.46-inch color display on the retractable handle, allowing you to conveniently view your measurements without having to stare down. In addition to weight, 6 essential body composition will also displayed simultaneously on the screen so you can see them at a glance without opening the app SMARTER APP FOR TRACKING AND SHARING: The Starfit app allows you to view detailed measurements of 20 body components and generate a printable professional report. You can track data changes by day, week, month, and year through the APP, and you can also synchronize data with popular fitness apps Apple Health, Health Connect, and Fitbit ONE SCALE FOR WHOLE FAMILY: Runstar body fat scale has enlarged electrode pads to increase the sensing area, which eliminates any concerns about having feet that are too small to reach the electrode pads. Supports the creation of up to 24 users, and the scale instantly recognizes the user when they step on the scale, perfect for families and fitness groups who want to monitor their body data in order to improve their overall health ECO-FRIENDLY & EASY USE: Adopting TYPE C charging method, no need to replace batteries, reduce environmental pollution. 2 hours full charge, it can be used for 3 months.