C37 Car QC3.0 20W Fast Charger LED Backlit Atmosphere Light MP3 Player Bluetooth FM Transmitter 1.QC 3.0 20W Fast Charging: Supports multiple fast charging protocols, simultaneously charging 2 devices 2.Bluetooth 5.3 Technology: Bluetooth 5.3 will bring you a faster, more stable and smarter connection with less sound quality loss, uninterrupted calls, and a music experience 3.Bluetooth Hands-free Call: Built-in microphone for clear and fluent calls One click hands-free, making your driving more safer 4.7-Color LED Light: The rainbow light design of the outer circle creates a new atmosphere to the cars interior space, making driving more fun 5.Support Read U Disk: Plug and play, HD sound quality, support power-off memory function Specifications: 1.Model: C37 2.Working voltage: DC12-24V 3.Size: 4.0x3.5x8.0cm 4.USB output: QC3.0 (20W) 5.Applicable models: 10V-32V 6.Applicable products: Suitable for charging household cars, mobile phones, tablets, digital cameras, etc.