Sony MDR-E829V Fontopia Earbuds with In-line Volume Control (Discontinued by Manufacturer) Fontopia In-The-Ear Design 16Mm Driver Neodymium Magnet Power Handling: 50 Mw Super-light, ear-bud headphones are perfect for both indoor and outdoor use Volume control on cord allows for easy manipulation of music's volume 16 mm driver units for deep bass sound and clear treble Silent cap prevents sound from reaching others Neodymium magnets provide maximum energy with minimal size