1. Ergonomic design, comfortable to wear2. Anti-interference wire, not easy to tangle, resistant to pulling3. Dual dynamic coil, four speakers, strong sound layering, suitable for iPhone 15 mobile phones4. Material: ABS+aluminum alloy+braided wire+TPE5. Digital chip: Lanxun 136D6. Rated power: 3mW7. Speaker: 8mm x 48. Impedance: 32 ohms +/-15% at 1KHZ 1mw9. Sensitivity:103+/-3dB10. Microphone: 40138. Interface: Type-C