audio-technica SonicFuel in-ear headphones for Smartphones with In-line Mic & Control ATH-CKX5iS GR (Green) Driver Diameter Dynamic, 8.0 mm Maximum Input Power 40 mW / Frequency Response 15 - 22,000 Hz Impedance 16 ohms Input plug 3.5mm gold-plated 4-pole mini stereo (L-type) Includes carrying pouch, eartips (XS/S/M/L), C-tips (S/M/L)