[E]ach design features unique, hinged opening mechanisms. This avoids the need for buying an over-sized band to gain knuckle clearance and can be a vital performance and safety feature in many professions or sports- places where all jewelry must be removed prior to activity.

It also allows easy removal for washing hands, showering or even sleeping. These special features contribute to functional, modern art pieces.

Every functional part is machined from American made, aircraft grade 6-4 Titanium.

Via McWhinney Designs.