Hi-fi soft ear buds that works with smartphones with a 3.5 mm jack. The soft foam cushion expands for a custom comfort fit with every listening experience. It also improves isolation plugging out ambient sounds and enhances deep bass and treble clarity. more
Koss RUK20 in-ear stereophones pair the Sound of Koss with unique color combinations to best express your own personal style. Bold people deserve bold headphones. RUK20 noise-isolating in-ear headphones deliver the Sound of Koss in style. Koss RUK20 is... more
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