Monster Turbine Pro Gold Audiophile In Ear Speaker with ControlTalk (Discontinued by Manufacturer) Pro speaker design with low mass, ultra-wide bandwidth driver for superior accuracy All-metal construction cancels unwanted resonance for pure sound Pro Sound Supertip with advanced construction provides maximum sound isolation Pro strain relief; rugged construction withstands heavy duty use MicroStrand conductors with ultra-low impedance for subtle detail and clear audio reproduction