Skullcandy 50/50 (Discontinued by Manufacturer) In-line microphone pulse control switch and volume control. Connectivity Technology: Wired 1 click for play/pause, 1 click to answer or end calls, 2 clicks for next track Frequency Response: 20-20k Hz 2 Silicone Gel Sizes 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 Half mic, half bud, and all boom 2 silicone gel ear tip sizes