AlphaBud Foam Earbud Speakers - Mono and Stereo are equipped with advanced miniature transducers providing unmatchable clarity and enhanced audio quality. These speakers are a cost-effective alternative to our Challenger-II earbuds and are part of the Alpha Audio line, making them an ideal choice for racing applications. They have rugged blue cabling, a 1/8in molded plug, and a 20in length cord. Available in either mono or stereo configurations, they are also compatible with Challenger-II foam ear bud replacements. However, they cannot be returned due to health laws.