ROCK SPACE B302 18W QC3.0 Dual USB Digital Display Bluetooth Car Charger, Support 64GB U Disk & TF Card FM AUX Hands-free Call(Black) Features: 1. Dual USB ports charge at the same time, with QC3.0 fast charging technology, fast charging does not damage the phone 2. Support BluetoothFMAUXU diskTF card to play music (U diskTF card is not included) 3. One-button Bluetooth hands-free call 4. Simple operation, one key to hang up answer the phone & switch the play mode & FM, rotate the button to adjust the volume size & previousnext song 5. Suitable for most models Product parameters: 1. Bluetooth version: V5.0 2. Bluetooth transmission distance: less than or equal to 10m 3. Bluetooth pairing name: rock space B302 4. FM transmitting frequency: 87.5-108.0Mhz (the default frequency is 87.5Mhz) 5. FM transmission distance: less than 5m 6. U diskTF card support capacity: less than or equal to 64GB 7. U diskTF card playback format: MP3WAVFLACWMA 8. USB 1 output: 5V 3A; 9V 2A; 12V 1.5A 9. USB 2 output: 5V 1A 10. Output power: 18W (max) 11. Input: DC 12-24V 12. Material: ABS 13. Product size: about 58x42x83mm 14. Weight: about 39g