UGREEN 2 in 1 Bluetooth Splitter: Bluetooth Transmitter Jack + Bluetooth Adapter Aux. The 2 in 1 Bluetooth Splitter features both transmitter and receiver modes. With the Bluetooth transmitter, a TV without Bluetooth capability can transmit wireless music to Bluetooth headphones. In receiver mode, the Bluetooth audio adapter allows an audio player without Bluetooth functionality to receive wireless music from a mobile phone. The flexible plug enables 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: 3.5MM. Bluetooth protocol: A2DP/AVRCP/HFP. Codec: RX mode: SBC, AAC; TX mode: SBC / Multipoint connection: Dual-point connection. Frequency range: 2.402GHz-2.480GHz / Frequency range: 20Hz-20kHz. SNR (Signal to Noise Ratio): >90dB / Transmission range: Up to 10m / 33ft. Battery capacity: 140mAh 3.7V (518mWh). USB-C port for power supply (5V).