Z Series is a fully featured product line delivering next generation wireless performance in styles and options to fit any wearer. Z Series is Starkey's newest full family of wireless products featuring next generation 900 MHz technology, leading the way in performance, comfort, personalization and connectivity. The foundation of Z Series is BluWave 4.0 — Starkey’s breakthrough operating system. This evidence-based, patient-focused operating system's signal processing power enables it to continually optimize audibility, intelligibility, comfort and sound quality. The result is Starkey Superior Sound.