The BR21 utilizes Bluetooth 5.0 protocols, which boast four times the range and twice the speed of previous versions. This means you can move freely around your home or office without losing connectivity, making it perfect for portable speakers or personal audio receivers. 2. High-Fidelity Audio Performance

Inside your headphones or speaker, the BR21 chip runs firmware written by the device manufacturer. Cheap factories often use "minimum viable" firmware that disables advanced equalizers and limits power output to save battery.

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