Photo 1 of FiiO BTR11 Bluetooth 5.3 Receiver LDAC 3.5mm Built-in Mic Wireless Audio Headphone Amplifier Adapter (Black)

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Photo 1 of FiiO BTR11 Bluetooth 5.3 Receiver LDAC 3.5mm Built-in Mic Wireless Audio Headphone Amplifier Adapter (Black)Photo 2 of FiiO BTR11 Bluetooth 5.3 Receiver LDAC 3.5mm Built-in Mic Wireless Audio Headphone Amplifier Adapter (Black)