Support Memory Card:NoHigh Definition Support:None Content:AUDIO WIFI Standard:None Wireless Type:bluetooth Sound Track:Double Interface:3.5mm,USB Origin:Mainland China Feature 1:Bluetooth 5.3 Car Audio Receiver Transmitter Feature 2:bluetooth audio receiver for car Feature 3:car aux usb bluetooth receiver Feature 4:adapter 3.5mm audio wireless bluetooth Feature 5:3.5 mm bluetooth adapter Feature 6:USB Dongle Stereo Wireless Adapter Feature 7:Bluetooth 5.3 Audio Transmitter Receiver These are 2 types to choose : 1) Bluetooth 5.3 4 IN 1 Receiver Transmitter Adapter 2) Bluetooth 5.0 Receiver Adapter Bluetooth 5.3 Product specifications: 1 Product name: B53 2. Bluetooth version: V5.3 3. Frequency range: 2.402-2.480GHZ 4. Bluetooth protocol: RX-A2D2AVRCP TX-A2DP. 5. Connecting devices: support one for one. 6. Supported format: SBC 7. Receiving mode: USB+AUX output supports calling. 8. Launch mode: USB+AUX input. Bluetooth 5.0 Product Name: Bluetooth Receiver Bluetooth Version: 5.0 Bluetooth Protocol : A2DP/AVRCP/AVDTP/HFP/HSP Bluetooth distance: 10 meters Interface: USB/3.5mm Product material: ABS Package Included: 1x Bluetooth 5.0 Audio Receiver Adapter 1x 3.5mm Aux Cable