The correct spark plug and gap is crucial to proper ignition. Spark discharge is a breakdown in the air insulator between the electrode and ground. Yes - air is an insulator, a pretty good one at that. As voltage builds at the electrode, atoms in the air within the air gap gain electrons. This process is called ionization.
It's one of the reasons why our standard lenses are polycarbonate (thinner than standard lenses typically sold by other eyeglasses retailers). At Warby Parker, you can upgrade to high index lenses for an additional $30 whereas it typically costs $60 to $100 more.
Also, because they are sunglasses, their color correction feature only works in bright light. EnChromaâs Cx sunglasses should be available as of the middle of next month. Expect to pay at least US$800 for a complete set of glasses, or $700 for the lenses alone. Source: EnChroma via Red Ferret.