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 Bluetooth/FM/AUX/U disk/TF card to play music (U disk/TF 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 & previous/next 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 disk/TF card support capacity: less than or equal to 64GB
7. U disk/TF card playback format: MP3/WAV/FLAC/WMA
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