Check the listing for details. Rugged Challenger Foam Ear Buds Speakers Racing Radios Electronics Communication. Condition: New. Listed at 84.99 USD. Professional Series Challenger II foam ear bud speakers with 1/8" mono plug. For the clearest race radio communications possible. Utilizing a hearing aid transducer instead of a standard speaker, expect unmatchable clarity from these ear buds. Professional Series Challenger II foam ear bud speakers with 1/8" mono plug. For the clearest race radio communications possible. Challenger II are #1! Utilizing a hearing aid transducer instead of a standard speaker, expect unmatchable clarity from these ear buds. Rugged blue cabling Knowles Hearing Aid speakers 1/8" mono plugMade In USA!*Returns are accepted if there is a product defect, or if the earbuds are new and unused. Due to health laws related to hygiene issues, worn/used earbuds cannot be returned unless there is a product defect.