Features:1. Small and exquisite, easy to use.2. Colorful atmosphere lights make driving more romantic.3. Compatible with Bluetooth, U disk (up to 32G) audio connection.4. Support power-off memory playback function.5. High-resolution, high-performance stereo, lossless music playback.6. Bluetooth version 5.3 supports Bluetooth audio playback and Bluetooth hands-free calling.7. 22.5W Super fast charging, charging while listening to songs.8. The voice navigation function supports 99% of map applications.9. Full-frequency FM wireless transmission technology, which can directly read audio files on Bluetooth mobile phones/U disks.10. Multiple protections such as over-current, over-charge, over-temperature, over-voltage,short-circuit protection, and anti-combustion make it safer to use.11. It is suitable for all cars, SUVs and trucks with a voltage of 12V-24V.Specifications:Model: C4Material: ABSColor number of atmosphere lights: 7+1 modeBluetooth version: Bluetooth 5.3Charging interface: USB 15W charge+Type-C 15W ChargeUSB1 interface: 5V/3.1AUSB2 interface: 5V/1.5AType-C interface: 5V/3.1AWorking Voltage: 12V-24VFile type: MP3/WMA/WAV/FLAC/APETransmitting frequency: 87.5-108.0MHzFunctions: U disk, AUX in, FM, Bluetooth music, voice navigation, dual USB fast charging,hands-free calling, etc.Size: 4.9 x 4.9 x 8 cmModel: C4SMaterial: ABSColor number of atmosphere lights: 7+1 modeBluetooth version: Bluetooth 5.3Charging interface: USB 22.5W Super fast charging+PD 30W22.5W interface: 4.5V/5A,5V/4.5A,9V/2.5A,12V/1.8APD interface: 5V/4.5A,9V/3A,12V/2.5AWorking Voltage: 12V-24VFile type: MP3/WMA/WAV/FLAC/APETransmitting frequency: 87.5-108.0MHzFunctions: U disk, AUX in, FM, Bluetooth music, voice navigation, dual USB fast charging,hands-free calling, etc.Size: 4.9 x 4.9 x 8 cm