Purchased from AliExpress in March 2025 and used for about 15 hours. I'm selling them because I don't use them much anymore. I used the medium-sized transparent ear tips. The medium-sized black tips and the foam tips were tried on once. Other sizes are unused. The replacement nozzle filter (high frequency) has a weak adhesive due to an initial defect. Please understand that these are used items before purchasing. The following is an automatically generated description: High-performance DLC diaphragm earphones equipped with a 10mm dual-magnet circuit. - Model: TRN DLC - Driver Size: 10mm - Features: Dual-magnet circuit - Diaphragm: DLC composite diaphragm - Accessories: Replaceable cable, ear tips, storage case - Design: Metallic finish, custom fit Thank you for viewing.