Inline ergonomics controls: Flexible, comfortable earhookphone. Simply adjust your headset's fit to suit you. Flexible earhooksphone. Comfortable, flexible, earhooksphone. Adjust your headset for a good fit. Voice&game on your fingertips. With the EX-03, you can adjust how much of your voice you would like to hear, relative to your game's sounds. In-ear cushion rubber: Available in a variety of sizes and shapes for a custom fit. Ear buds are positioned comfortably inside the canal to reduce external noise. Anti-twist connecting wire: So , tactile connecting wire reduces wire curl&twist.