High performance 3.5mm in-ear earbuds for mobile users.In-Line microphone for handsfree mobility.On/Off button for easy answering option.Includes: Small, Medium & Large ear cushions.Ear bud design directs sound into ear canal. Model: XTRM94221BLK. Audio Earbuds with Microphone .High performance 3.5mm in-ear earbuds for mobile users.High performance 3.5mm in-ear earbuds for mobile users.In-Line microphone for handsfree mobility.On/Off button for easy answering option.Includes: Small, Medium & Large ear cushions.Ear bud design directs sound into ear canal.