Smartwatches are advanced digital watches that combine traditional timekeeping with smartphone connectivity and a variety of smart functions. They serve as digital companions offering features like message and call notifications, fitness tracking (heart rate, calories, steps), GPS, music control, and health monitoring (ECG, blood oxygen, sleep tracking). Smartwatches come in two main types: standalone models with built-in cellular connectivity, allowing internet and phone use independently from a smartphone, and second-screen models that rely on Bluetooth connection to a smartphone. The top smartwatch models in 2025 include the Apple Watch Series 10, regarded as the standard for modern smartwatches with extensive health sensors and seamless integration into the Apple ecosystem, starting at around 344 euros. For Android users, the Samsung Galaxy Watch 8 is highly rated, especially for Samsung smartphone owners who can access exclusive health features such as blood pressure and ECG, priced from about 260 euros. These devices offer robust fitness and health tracking, smartphone notifications, voice assistant integration, digital payments, and customizable applications through platforms like Wear OS for Samsung watches. Modern smartwatches have displays comparable to traditional watches, often featuring high-resolution OLED screens with technology allowing easy visibility in bright light. They frequently include sensors for heart rate, oxygen saturation, temperature, motion, and environmental conditions, along with safety features like fall detection and emergency calls. Their design varies from sporty to elegant to suit different preferences and occasions. Both standalone and second-screen smartwatches enhance connectivity, convenience, and health awareness in daily life.