W1-

Double-layered core:

• Outer softer silicone keeps SpinFit signature comfy wearing experience.

• Inner harder silicone makes W1 more stable when the ear tips are installed on earphones.

W(wave)-shaped design:

• Reduce the pressure from outside

• Enhance the noise isolation function.

Recommend earphones style-Multiple drivers and big dynamic driver earphones.

W1 fits perfectly on big and heavy earphones due to the stability the design gives.