Product material: plastic + metal Product color: black Interface type: 3.5mm Bluetooth version: Bluetooth 5.0 Features: Support for connecting headphones, connecting mobile phones, connecting speakers, connecting cars Product size: 5*2*1cm Product bare weight: 11g (Bluetooth receiver + metal adapter) Total weight: 25g (Bluetooth receiver + metal adapter + wire + manual + PP bag packaging) Product packaging: sealing PP bag Product features: Bluetooth receiver, car Bluetooth receiver, car Bluetooth receiver, AUX Bluetooth receiver, audio adapter