This Earphone

Newegg.com has the SENNHEISER Adjustable Stereo Clip-on Sport Earphones for $24.99 with free shipping.

Product description from Newegg.com:

Model Brand SENNHEISER Model OMX70 Type Headphone General SPEC Frequency Response 19Hz-21KHz THD < 0.1% Input Impedance 64 ohm Sensitivity 116dB S.P.L. at 1KHz Connector 3.5 mm right-angled stereo mini-jack plug Ear Coupling Earbud Cord Length 4 feet
Weight 0.25 oz Features Features Ergonomic design ensures optimum fit and comfort

Powerful neodymium magnets for detailed sound

Sweat- and water-resistant

Extremely rugged earphones and cable

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