Dexim DEU039L iGroove Earbud with Built-in Remote & Mic (Blue) Pro speaker design with ultra-wide bandwidth driver for superior accuracy. Built-in Mic for convenient handsfree calling, music and video playback controls. Flat tangle-free cable design. Compatibility: iPad, iPhone 3GS & 4, iPod Shuffle (3rd Gen), iPod Nano (4th, 5th & 6th Gen), iPod Classic (120 GB & 160 GB), iPod Touch (2nd, 3rd & 4th Gen) Tech Specs: Driver = 9mm; Impedance = 16 Ohms; Jack Plug = 3.5mm Stereo; Transducer Principle = Dynamic; Frequency Response = 20 to 20,000Hz; SPL = 112dB +/- 3dB (1kHz/1Vrms); THD = &lt; 0.1%; cord length = 1.2m Color: Blue