2 in 1 Bluetooth adapter with transmitter and receiver functions, effective wireless audio solution. You can transmit movies, games or music to a wireless headset, also receive audio from a mobile device via a traditional wired speaker or car radio. Farewell to the cable problems with this 2 in 1 wireless adapter, more convenient to use. Small size and lightweight, easy to carry, suitable for both home and car use. Adopt high quality material, sturdy and durable, and you can use for a long time. Specification: Item Type: Adapter Condition: 100% brand new Color: Black Material: ABS Bluetooth Version: 5.0 + EDR Bluetooth Solution: CSR8670 Product Model: BT4842B Bluetooth Range: Approx. 10m/33ft Bluetooth Protocol: A2DP/ACRCP/APTX/APTX-LL Battery Capacity: Built-in lithium polymer 450mAH Battery Model: GRP6016075 Operating Current: <23mA Working Voltage: DC 3.0-4.2V Frequency Range: 2.402Ghz-2.480Ghz Codec: Aptx-II Aptx ACC SBC Connection Mode: Digital optical fiber for TOSLINK or 3.5mm auxiliary Package List: 1 x Bluetooth Transmitter Receiver 1 x USB Cable 1 x Audio Cable 1 x Signal Indicator Line 1 x 3 in 1 Cable 1 x User Manual