Feature 1This extremely portable, lightweight wireless audio receiver is an ideal wireless audio solution for a wide range of situations and uses. 2Our wireless charging device is mounted on air vent, compatible with most car air vent. 3It will not block your line of sight while you are driving, convenient for use. 4Easy plug, pair and play. Plug into computer speakers, home stereo systems or other speaker systems via the 3.5 mm AUX or RCA cable, then pair with the Bluetooth audio devices. 5Sui table for a variety of audio device such as smartphones, tablet, PC, car stereo. You can enjoy the music.Material: ABS Size: 4 4 1 cm Color: Black .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Bluetooth Receiver1 x USB Power Cable1 x RCA Cable1 x 3.5mm AUX Cable1 x Instructions