In-Ear Earphones Hi-Res Headphones with High Resolution HIDIZS Seeds Dynamic IEMs Wired Earbuds (Black) 3.5mm Dynamic IEMs with aluminium alloy body, let your Seeds of music fever grow. Dual voice coils increase field strength and isometry to planar-class levels. Graphene diaphragms create large drivers that extend from subsonic to supersonic with ideal pistonic motion Directly welded from high-quality gold-plated plug to drivers for ideal electroacoustic transmission. It's fit your ears perfectly cable up or down, with zero sharp angles for hours of comfortable wear.