COZOY D1 is the brand debut in-ear monitor, named for its dynamic driver ("D") and its identity as the first-born product. It pairs an independently developed 10mm dual-magnetic circuit, dual-cavity dynamic driver with a graphene diaphragm to deliver balanced three-frequency sound, precise imaging, and low-distortion clarity. Housed in an ergonomic, 3D-printed medical-grade resin shell with a 0.78mm 2-pin replaceable single-crystal copper silver-plated cable, the D1 is built for Hi-Fi listening, gaming, and all-day comfort — an approachable choice for newcomers and enthusiasts alike.