Power Speaker for Player

Features:
1. Speaker for iPod/MP3/MP4 etc.
2. POWER Source: 3.7V 1.4AH re-chargable Li-ION batteries.
3. Max handly Power: 2 × 2W.
4. Speaker volume:120dB (1KHz 30 level).
5. Frequency Response: 20Hz-20KHz. 31 level volume control (Step 10 initial value).
6. Charging power voltage: USB 5V.
7. Play time: 5 hours