SkullCandy 2011 50/50 Earbuds (Black-Red) (Discontinued by Manufacturer) In-line microphone pulse control switch and volume control 1 click for play/pause, 1 click to answer or end calls, 2 clicks for next track Frequency Response: 20-20 kHz Nylon Mesh Carry Case 2 Silicone Gel Sizes Connectivity Technology: Wired