Three devices can be paired with Silent Click. Windows and Mac layouts High-end Technology That Saves Power Keys for Multimedia Functions dependable and steady two-mode connectivity: designed with our ultra-stable two-mode technology, which supports USB connectivity in addition to wireless connectivity via 2.4Ghz and Bluetooth up to 10 meters. Completely Silent and Distraction-Free Design: Our premium silent switches were used in its design, giving users peace of mind. completely calm, cozy, and distraction-free.