The ATH-CLR100iS SonicFuel in-ear headphones deliver great-sounding audio in a travel-friendly design with an inline microphone and control button. The 8.5mm drivers deliver crystal-clear sound reproduction with stunning depth and detail. Plus, with Audio-Technica's ear-fit design and three sizes (S / M / L) of eartips to choose from, you'll enjoy long-lasting comfort and excellent noise isolation. The cord features an in-line microphone and controls that let you answer calls and handle playback (play, pause, fast-forward, rewind, next/previous track) of music and video on smartphones and other portable devices, including iOS devices.   Specifications   Brand Name: Audio-Technica Manufacturer: Audio-Technica U.S., Inc Manufacturer Part Number: ATH-CLR100ISBK Package Contents: SonicFuel Earphones with Built-in Microphone and Controls Domes (S / M / L) Product Line: SonicFuel Product Model: ATH-CLR100is Product Name: SonicFuel Earphones with Built-in Mic and Control Product Type: Earset Interfaces / Ports Host Interface: Mini-Phone Slot Cable Length: 3.94 ft Media & Performance Connectivity Technology: Wired Microphone Microphone Design: On-Line Miscellaneous Features: Comfortable Form Factor: In-Ear Package Contents: SonicFuel Earphones with Built-in Microphone and Controls Domes (S / M / L) Network Communication Connectivity Technology: Wired Physical Properties Color: Black Form Factor: In-Ear Weight (Approximate): 0.12 oz Product Information Cable Length: 3.94 ft Features: Comfortable Form Factor: In-Ear Storage Features: Comfortable Technical Information Cable Length: 3.94 ft Connectivity Technology: Wired Features: Comfortable Host Interface: Mini Phone Impedance: 16 ohms Maximum Frequency Response: 25 kHz Minimum Frequency Response: 20 Hz Sound Mode: Stereo Wireless Specifications Features: Comfortable