Nixon The Trooper on-ear custom headphones. An unstoppable force of sight and sound. With its 40mm drivers packing a punch, the Trooper doesn't wait to sound the attack. Silicone cushions provide complete comfort while the collapsible frame folds up into a stealth travel kit. Removable cable with iPhone compatible remote and microphone. Custom full size volume knob. Padded headband. Custom molded silicone ear cushions. Three axis adjustable drivers. Custom folding hinge. Custom removable cord. Custom molded carrying case. Driver type: 40mm. 1khz sensitivity: 112 db. Frequency response: f20-20,000 hz. Plug: 3.5mm stereo. Cord: 1.5m tpe. Weight: approx. 170g. Imported.