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1. Mini hamburger speaker,retractable speaker,portable speaker,good for promotional gift.
2. Retractable,good fot travling .
3. Come with audio cable,connect with mp3,mp4,mobile,PC,ect.
4. Professional speaker and sound cavity design,powerful sound perfectly ,super bass clearly .
5. Built in lithium battery.support computer chager.
7. Battery:High capacity battery,USB6V
8.Speaker:4ohm 2W
9.Power:2W
10.Frequency:80Hz - 18kHz
11.S/N:>65dB
hamburger speaker mini mp3 speaker