FiiO Air Link QCC5181 aptX Lossless LDAC Bluetooth 6.0 Hi-Res Audio Transmitter
FiiO Air Link LDAC & aptX Lossless Bluetooth 6.0 Transmitter (QCC5181 Chip). Most smartphones are limited — iPhones only support AAC, and most Android phones stop at aptX or aptX HD. FiiO Air Link Portable Hi-Res Bluetooth Transmitter.