A wearable, or wearable technology, is an electronic device designed to be worn on the body. These devices are hands-free gadgets powered by microprocessors, often with internet connectivity, and are equipped with sensors to collect and transmit data. Wearables can be worn as accessories, embedded in clothing, implanted in the body, or even tattooed on the skin. The main purpose of wearables varies depending on the device but typically includes functions like fitness tracking, health monitoring, navigation, communication, and productivity. Examples include smartwatches, fitness trackers, smart glasses, smart rings, virtual reality headsets, and medical devices. Wearables collect data in real-time, such as heart rate, physical activity, and vital signs, and sync this information with other devices such as smartphones or computers. They are a key part of the Internet of Things (IoT) and have applications ranging from health and medicine to entertainment and enterprise efficiency. In summary, a wearable is an electronic device worn on the body that combines sensors, computing power, and connectivity for tracking, analyzing, and transmitting personal or medical data seamlessly integrated into daily life. This concept is central to innovative technology improving lifestyle, health, and communication.