Support Memory Card:NoSupport Apt-x:No Support AAC:No High Definition Support:None Content:AUDIO WIFI Standard:None Wireless Type:bluetooth Sound Track:Double Interface:USB Origin:Mainland China Features: 1. Clear sound quality: no noise, low delay without stuttering, strong and stable signal, low radiation, and no overheating. 2. Convenient to use: Supports multiple terminal devices, including mobile phones, tablets, and wireless connections to audio/amplifier/car. 3. Multipurpose: Supports car audio hands-free calls, connects the Bluetooth Compatible receiver to the car USB interface, and connects through Bluetooth Compatible to make calls while listening to music. 4. Long distance: 10 meters of unobstructed transmission covering the entire house. 5. Noise reduction: CVC noise reduction technology, removing noise and retaining more sound details. Specification: Model Number: Bluetooth Audio Adapters Bluetooth version: Bluetooth Compatible 5.3 Transmission distance: 10 meters/32.8ft Scope of application: speaker/amplifier/car mounted Voice call: supported Packaging size: 90 * 75 * 10mm/3.54*2.95*0.39inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.