1. TF card expansion: 32G max (not included)
2. Output power: 3W
3. Battery voltage: 3.7V
4. Charging voltage: 5V
5. Standby time: 4-5 hours
6. Signal to noise ratio: 80dB
7. FM transmission frequency: 87.6-108MHz
8. Power source: battery
9. Charging time: 2-3 hours
10. Duration: 2-3 hours
11. Battery capacity: 800mAh
12. Battery type: Lithium-ion battery BL-5C
13. Compatible with: mobile phone, PC, MP4, MP3, MP5, PSP, TF/Micro SD card
14. Support: FM, TF music player, SD card music player
15. Function: AUX function, song
16. Connection method: wireless, wired
17. Interface: TF card slot, SD card slot, 3.5mm audio

feature:
- Can play MP3 music from TF/SD/MMC;
- FM radio can automatically scan and remember channels;
- With the audio cable jack, you can easily connect to your computer, MP3, MP4, mobile phone, etc.
- Standard 3.5mm headphone jack for listening to radio and music on headphones;
- Select radio channels and MP3 music, buttons from 0 to 9;
- In MP3 mode, when the power is off, it can be played on the next boot;
- With the BL-5C rechargeable lithium battery, you can connect via USB, connect the data cable to a computer or a USB power adapter, or use a charger, etc. to charge it.