... 21mm Item no.:OIS-251Name:Mini Speaker for IpodDescription:We love this little iPod mini speaker which is designed to look as ... your cubicle, traveling or the bathroom. No batteries needed! This speaker uses a USB to power through your iPod! Works with ... Red, Blue, Green, White, Black, Yellow, Pink Features:-Speaker Unit:2×1"Full Range Magnetically shielded-Frequency Response:50~15,000HzPMPO-Power:500MW ...