Bluetooth 4.1 is a wireless communication standard that allows devices to connect and exchange data over short distances. Released in 2013, it improved upon previous versions by enhancing the connection stability and allowing multiple devices to communicate simultaneously. This means that devices like smartphones, headphones, and smartwatches can work together more efficiently. One of the key features of Bluetooth 4.1 is its ability to support both classic Bluetooth and Bluetooth Low Energy (BLE). This allows for better battery life in devices that use less power while still maintaining a reliable connection. Overall, Bluetooth 4.1 made it easier for users to connect their devices seamlessly.