Features Hands free communication, ideal for Internet, video-Conference, games, lingual- recognition. A must have tool for VoIP Skype, MSN, Yahoo, ICQ. Comfortable Earhook wearing , due to the soft rubber material . Ear hook type, D shape, 3.5mm jack plug,suit for ipod/MP3/MP4/CD players,mobile phone,PC and other portable multimedia. D-shape ear hook earphone for simultaneous interpretation and tourist guide/monitoring system. With miniature design, perfect to fit, also its ear-hang style with no influence of hairstyle. Comfortable experience for your ear via the soft ear cushion design in accord with somatology, which the user will feel more comfortable to fit. Specification: Material:soft rubber Plug type:Φ3.5mm Sensitivity:950dB±5dB Impedance:32Ω ±15% Rated Power: 15mW ( 0.69V) Max. Power: 20mW ( 0.8V) Frequency response:20-20,000Hz Cable length:130cm±5cm Communication:wired Product name:D-shaped headphones connection:3.5mm interface dual channel Support:3.5mm Audio Jack Usage:Plug and play Compatible:Mobile\PC\computer\notebook\iphone\ipad\skype\MSN Ect DC Resistance Impedance: 32Ω ± 4.8(15%) 32Ω ±4.8 (15%) at 1KHz, 0.18V S.P.L.: 120+3 Frequency Response Curve: Figure 1, Table 1 T.H.D. input: 0.18V <5% 300~3K <2% 1KHz Package List: 10x EXMAX DTP-03 D-shape Earphones