KBEAR TianGong CZ101DD 4BA All-metal HIFI in Ear EarphonesPrecision in Motion · Sound Without Limits Highlights: 10mm Dual-Magnet PET Diaphragm Driver4BA For Mid-high FrequencyPrecision Crossover TechnologyFull Metal Design with Gear-Inspired Aesthetics Specifications:Brand: CCZModel: CZ10Product Na...