Connected scales have evolved beyond simply measuring weight. These devices now offer detailed body composition analysis, including metrics like bone mass, muscle mass, and fat mass. However, it's important to understand that these readings are best viewed as trends over time rather than exact medical evaluations. They can be useful for tracking general health and fitness goals, but they should not replace professional medical advice. The Withings Body Scan is a high-quality connected scale priced at 399.95 euros. It is part of the Withings ecosystem and connects to the Withings app via Wi-Fi or Bluetooth. A newer version, the Withings BodyScan 2, was released in France on June 9, 2026, with a higher price tag of 499.95 euros. It includes a screen on the handle and features that notify users of potential hypertension risk. For a more budget-friendly option, the Withings Body+ offers body composition measurements for less than 100 euros, though it lacks heart rate monitoring and uses batteries instead of being rechargeable. Other models provide a range of features at different price points. The Terraillon Master Coach Ultra is an affordable scale with a sleek, dark finish that needs regular cleaning. It connects via Wi-Fi and provides data such as visceral fat index, BMI, and daily caloric needs. The Tanita BC-401, while older in design, is known for its high-quality construction and a large, easy-to-read screen. It uses Bluetooth for data synchronization and offers accurate measurements. The Xiaomi Mi Composition Scale 2 is an economical choice at 35 euros, supporting up to 16 user profiles and offering a precision of 50 grams. The Tefal Body Partner includes a "silhouette sensor" for measuring six body positions, but it requires Bluetooth connectivity and is more expensive than other models. All connected scales use bioelectrical impedance analysis, a method that sends a small electrical current through the body to measure composition. This requires users to stand barefoot on a dry surface. While high-end models like the Withings Body Scan provide more precise readings, they still differ from medical assessments by up to 5 to 10 percentage points in fat mass. Most major brands ensure compatibility with health apps like Apple Health and Google Fit, though not all data may transfer to third-party applications. To ensure consistent results, users should weigh themselves at the same time each day, on an empty stomach, and in the same location.