What is the Bluetooth version of the Redmi Buds 4 Active?

The Redmi Buds 4 Active uses the SBC (Subband Coding) codec for Bluetooth audio transmission.
For your reference, here are some detailed advantages of using SBC:
1. SBC is the default audio codec for Bluetooth devices and is widely supported across various devices and operating systems. This means that the Redmi Buds with SBC Bluetooth can seamlessly connect with a wide range of smartphones, tablets, laptops, and other Bluetooth-enabled devices without compatibility issues;
2. SBC offers a reliable audio streaming experience with consistent performance. It maintains a stable connection between the source device (e.g., smartphone) and the Redmi Buds, minimizing audio dropouts or interruptions during playback;
3. SBC typically introduces minimal delay in audio transmission, resulting in synchronized audio and video playback when watching videos or playing games on your smartphone or other devices;
4. SBC is designed to efficiently compress audio data for transmission over Bluetooth while maintaining acceptable audio quality. This efficiency helps conserve battery life on both the Redmi Buds and the device they're paired with. As a result, you can enjoy longer listening sessions without needing to recharge frequently.