Audio Technica Sonic Fuel ATH-CKX9 In-Ear Headphones - Silver Music is your energy for life – the fuel for your heart and soul. SonicFuel headphones are specifically designed for active, daily use, to power you forward by delivering extraordinary comfort, style and an immersive listening experience that never sounds artificial, processed or filtered. Just pure sonic goodness for the high-octane tempo of your life. The ATH-CKX9 SonicFuel in-ear headphones feature stay-in-place fit, providing unique comfort in addition to optimal sound. The C-tip configuration nestles within the ear where it locks in place for extra stability. Customize your comfort with a multitude of C-tip & silicone eartip sizes or use the included Comply foam eartips for true sonic immersion. Large 13.5 mm performance-enhanced drivers fuel your day with a premium listening experience, deeper bass response and sparkling high frequencies. A newly designed flat cable eliminates annoying tangles and lasts longer. The included hard carrying case keeps your headphones protected and organized, so they are easy to find and unravel every time. Features Large 13.5 mm performance enhanced drivers offer a premium listening experienceC-tip design fits the shape of your ear for reliable stay-in-place comfortIncluded luxury zippered hard carrying case keeps headphones protected and easy to find every timeAlso includes Comply foam tips, silicone eartips (XS/S/M/L), C-tips (S/M/L), and tangle-free flat cableAvailable in black (BK) and silver (SV)