Sylvania 3-IN-1 Headphone Value Pack, SYL-VP311 Includes Headphones, Hanger-style Buds, and Earbuds Earbuds have 15mm speaker driver and soft, foam earbud covers. Headphones are lightweight and comfortable with 20Hz-20kHz frequency response Hanger-style buds contain 15mm drivers and are great for outdoors and sports.