Earbuds machined like cufflinks, with battery life that embarrasses the category. Sixteen hours per charge makes the case a formality on all but the longest itineraries. They cost real money and look like it.

Specifications

  • Aluminum and sapphire-glass earphones; aluminum or Kevlar-fiber charging case
  • Custom 11 mm beryllium drivers
  • Three hybrid ANC modes: Adaptive, All Day, Max
  • Up to 16 hours per charge (12 with ANC); 32 more from the case; 48 hours total
  • Bluetooth 5.4 with multipoint; six-microphone talk system
  • 8.1 g per earphone; IP54 earphones, IPX4 case
  • Price verified 23 Sep 2026; the maker revises pricing periodically.

$349 · Price via MW09, masterdynamic.com

Method. Compiled from published specifications and maker materials. This is not a hands-on test. Read our gear review policy.