1. Type-C to 3.5mm interface, the headphone interface can be changed at will 2. Support listening to songs/calls/voice/wire control 3. Digital audio chip, beautiful and no noise 4. As light as 5.8g, mini and portable 5. Hard aluminum alloy shell, strong braided wire 6. Parameters: Material: aluminum alloy + braided wire Expansion interface: 3.5mm Impedance: 32 Ohm Frequency range: 20Hz-20KHz Signal-to-noise ratio: 90dB Size: 138x11x8mm Weight: 5.8g