Features:Domestic silk sound film:The vocals are , delicate and soft, natural and smooth, with distinct layers and a strong expressive sense of hearing.Ferrosound Magnetic Fluid:Improve dynamic linearity, reduce voice coil temperature rise, effectively reduce thermal power compression effect, reduce distortion, harmonic distortion and sound colorationAeromagnetic strong magnet:Improve the electroacoustic conversion efficiency of the speaker, increase sensitivity, expand coil stroke, and increase frequency extension.Product name:4 inch Silk film HIFI tweeter dome driverParameter:104MMImpedance: 8 OhmPower: 30W-60WPanel size.104MMMagnet size:70MMDiagonal screw pitch:92mmMagnet thickness:15mmMaterial: plasticcolour: As shownPackage Contents:1 x 4 Inch Tweeter SpeakerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.