Check the listing for details. NFC Bluetooth Transmitter Receiver Audio Adapter 3.5mm/AUX/RCA/Optical/USB DAC. Color: Black, Condition: New. Listed at 21.88 USD. NFC Bluetooth Transmitter Receiver Audio Adapter 3.5mm/AUX/RCA/Optical/USB DAC 800?'800px':this.width); max-height:800px;height:e­xpression(this.height>800?'800px':this.height)" src="https://image.pushauction.com/0/0/fd66b606-4128-4609-8952-c17524d3d960/06bb9d04-655d-4fcc-ab8b-34d3c8130640.jpg"> 800?'800px':this.width); max-height:800px;height:e­xpression(this.height>800?'800px':this.height)" src="https://image.pushauction.com/0/0/fd66b606-4128-4609-8952-c17524d3d960/b577ab8d-a818-42bd-9f9d-b44c7d7381d0.jpg"> Features: ◆ Exquisite product appearance and modeling, cool RGB phantom light, multi-color adjustable, soft and not harsh. ◆ Adopt Bluetooth 5.3 chip design with stronger compatibility and stability. ◆ Bluetooth receiver (RX), Bluetooth transmitter (TX) two-in-one design. ◆ Receiving mode is upgraded, and it can be connected to two cell phones at the same time to listen to songs. ◆ Equipped with high-definition LED digital display screen, full-screen display of the working status and Bluetooth mode is clearly visible. ◆ Built-in digital signal to analog chip, support digital fiber, coaxial, AUX, RCA interface. ◆ Upgraded wireless NFC sensor function, one touch of the cell phone to connect/disconnect. ◆ Built-in 1000mAh rechargeable high-capacity lithium battery, up to 10 - 12 hours of continuous work after fully charged, standby about 30 days. ◆ Support USB (U disk) playback and transmit, support a variety of lossless format audio file playback. ◆ Built-in HD microphone, support wireless listening, hands-free phone talk, GPS navigation. ◆ The product is simple to connect, no need to download APP or install any drivers. Specifications: Bluetooth Version: Bluetooth V5.3 Supported protocols: RX: A2DP AVRC; TX: A2DP Operating Frequency Band: 2.402GHz -2.480GHz Power Level: Power Level 2 (Class II) Sensitivity: -85dBm