Features: 1. Small and exquisite, easy to use. 2. Colorful ambient lights make driving more romantic. 3. Compatible with Bluetooth and U-disk (up to 32GB) audio connection. 4. Supports memory playback function after power failure. 5. High resolution, high-performance stereo, lossless music playback. 6. Bluetooth version 5.0 supports Bluetooth audio playback and Bluetooth hands-free calls. 7. 22.5W Super fast charging, allowing you to charge while listening to music. 8. Voice navigation function supports 99% of map applications. 9. Full-frequency FM wireless transmission technology, which can directly read audio files from Bluetooth mobile phones/U-disks. 10. Multiple protections including overcurrent, overcharge, overtemperature, overvoltage, short circuit protection, and anti-burning make it safer to use. 11. It is suitable for all cars, SUVs, and trucks with a voltage of 12V-24V. Specifications: Material: ABS Number of ambient light colors: 7+1 mode Bluetooth version: Bluetooth 5.0 Charging interface: USB 22.5W Super fast charging + PD 20W 22.5W interface: 4.5V/5A, 5V/4.5A, 9V/2.5A, 12V/1.8A Working voltage: 12V-24V File type: MP3/WMA/WAV/FLAC/APE Transmission frequency: 87.5-108.0MHz Functions: U-disk, FM, Bluetooth music, voice navigation, dual USB fast charging, hands-free calling, etc. Size: 4.9 x 4.9 x 8 cm Note: 1. As different computers display colors differently, the colors of the actual items may vary slightly from the above images. 2. Please allow 1-2 cm difference due to manual measurement. Thank you for your understanding.