Lenovo offers its Lenovo M0520 Multimedia Stereo USB 2.0 Speakers in Black, model no. 57Y6360, for $29.99. Coupon code “USPC11JL16360” drops them to $12.99. With free shipping, that’s the lowest total price we could find by $19, although they were $2 less four weeks ago (since expired). Sales tax is added where applicable. This USB-powered round speaker system features a 90Hz to 20kHz frequency response, 3.5mm audio jack, and more.

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