The average professional should strongly consider owning 1 wireless earpiece.
Absolutely look for a dedicated power switch with one-touch or toggle operation. Any kind of button-holding is unacceptable for major functions.
Recommendation: Plantronics Voyager Legend
When turned on, its automatic battery lifetime notification and sync process notification are extremely convenient. The magnetic attachment charger is convenient to use; while not as comfortable as surface induction charging, the direct-attachment design provides a faster charging rate; the one minor downside is that the proprietary charging cable is harder/costlier to replace. Device can be swiveled to fit either ear, adding preferential flexibility. Ergonomic frame mounts on ear strongly and snugly for excellent long-term wear comfort.