UGREEN 2 in 1 Bluetooth Splitter: Bluetooth Transmitter Jack + Bluetooth Aux Adapter. The 2 in 1 Bluetooth Splitter features both transmitter and receiver modes. The Bluetooth transmitter allows a TV without Bluetooth capability to wirelessly transmit music to Bluetooth headphones. In receiver mode, the Bluetooth audio adapter enables an audio player without Bluetooth functionality to receive wireless music from a mobile phone. The flexible plug allows the Bluetooth splitter to be connected in a small space behind a wall-mounted TV or soundbar, providing more connection options. Bluetooth version: 5.0. THD (Total Harmonic Distortion): <0.1%. Transmitter and receiver cannot be used simultaneously. Input: 3.5 mm. Bluetooth protocol: A2DP/AVRCP/HFP. Codec: RX mode: SBC, AAC; TX mode: SBC / Multipoint connection: Dual-point connection. Frequency range: 2.402 GHz-2.480 GHz / Frequency range: 20 Hz-20 kHz. SNR (Signal to Noise Ratio): >90 dB / Transmission range: Up to 10 m / 33 ft. Battery capacity: 140 mAh 3.7 V (518 mWh). USB-C port for power supply (5 V).