Takstar TS-2251 In-Ear Headphones for maximum noise isolation, energetic bass, natural medium and high net. Supplied with three pairs of ear pads in various sizes for optimal fit. Applications: CD, MP3, monitoring & bull; Type: Dynamic & bull; Loudspeaker diameter: & Oslash; 9.2mm & bull; Impedance: 16 & Omega; & Bull; Sensitivity: 100 dB & plusmn; 3 dB (at 1 kHz) & bull; Frequency: 20Hz-20kHz & bull; Cable: approx. 1,5 & bull; Connector: Stereo & Oslash; 3.5mm