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.
Compatible with the same earphone groups as CP145.
