Sentry Micro Buds Digital Stereo Earphones By Dixie Daniels on Sep 30, 2007 - Updated Oct 15, 2011

These headphones were purchased originally for use with an mp3 player. The package comes with two earbud sizes; it's easy to change them out, but not so easy that they become loose at any point. Personally, the smaller ones fit me. These earbuds work really well when I wear my motorcycle helmet, they don't budge a bit. The frequency range is 20Hz - 20,000Hz, impedance is 320hms, and the plug is a standard 3.5mm Stereo, connected to a four foot cord. We found these for less than they retail, and have been very happy with their performance from the start. They don't advertise the noise cancelling aspect of the earphones, but whenever I'm on my bike, the motor's noise is all but gone. Overall a VERY good deal.