Lenovo offers its Lenovo M220 Mini Portable USB Stereo Speakers, model no. 55Y2033, for $29.99. Coupon code “USPC11AG32033” cuts them to $9.99. With free shipping, that’s a buck under our mention from six weeks ago and the lowest total price we could find by $14. Sales tax is added where applicable. Features include a USB interface and integrated amplifier.

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