Support Memory Card:YesSupport Apt-x:No Support AAC:No Model Number:USB Bluetooth 5.0 Adapter High Definition Support:None Content:Audio&Video WIFI Standard:None Wireless Type:bluetooth Sound Track:Double Interface:3.5mm Origin:Mainland China Feature 1:built-in microphone Feature 2:Hands-free Call Feature 3:Wireless Bluetooth Receiver Feature 4:Bluetooth Car Kit Feature 5:AUX Bluetooth 5.0 Adapter Feature 6:3.5mm Jack Dongle Cable Feature 7:3.5mm Jack Audio Music Mic Handsfree Adapter for Car Speaker Feature 8:Auto reconnection Feature 9:Stereo Sound / CD Sound Quality Specification: Model Number: Bluetooth Receiver Bluetooth-compatible version: 5.0 Sensitivity: -42+3dB Signal to noise ratio: More than 90dB Supported decoding formats: flac/wav/ape/mp3 Bluetooth-compatible delay: Less than 180ms THD+N: Less than 0.1% Frequency response: 20Hz-20KHz Output power range: 33mW RL=16 Effective transmission distance: 10m/32.8ft Frequency range: 2400-2483.5MHz