What Bluetooth version does the POCO C61 adopt?

The POCO C61 adopts Bluetooth 5.4, and it supports Bluetooth HID.
For your reference, here are some key features of the Bluetooth 5.4 version:
1. Bluetooth 5.4 continues to build on the low energy consumption features of its predecessors, optimizing battery life for connected devices;
2. Bluetooth 5.4 supports faster data transfer rates, allowing for quicker and more efficient communication between devices;
3. Bluetooth 5.4 extends the range of connectivity compared to previous versions. This means more reliable connections over greater distances;
4. Bluetooth 5.4 introduces enhancements in security protocols, offering better protection against potential security threats and ensuring a more secure connection between devices;
5. Bluetooth 5.4 supports higher-quality audio streaming, which benefits people who prioritize sound clarity and detail in their wireless audio experiences.