Detailed information: Tiandirenhe TD-R 3D Print MMCX HIFI Earphone Hybrid technology Custom 3D printing inverted resin headphone HIFI Headset 1* Exclusive new technology, solid injection molding resin headphone, solid, not the market of resin plastic shell headphones 2* Support custom, single circle, circle iron, multi-action iron unit. 3* The in
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