QuietOn 4 is the newest model. Key improvements include:
•Ergonomic oval design that matches the natural shape of the ear canal for better comfort and fit.
•Premium Comply™ foam eartips with a built-in wax guard for durability and hygiene.
•A sleek black design that feels modern and discreet.
Both models cancel low-frequency noises effectively, but QuietOn 4 provides the best overall comfort and usability.