Silent Design: Silicone rubber is attached to the keycaps, reducing typing noise by over 90%. Multi-Pairing: Can be paired with up to 3 devices and switched instantly with a button. Antibacterial Specification: The main body is treated with antibacterial processing, allowing for clean use. Multi-OS Support: Automatically identifies 5 operating systems: Windows, macOS, Chrome OS, iOS/iPadOS, and Android, and switches to the optimal input mode. Angle Adjustment: Includes a stand that allows for 2-stage adjustment of the tilt angle to suit your posture. *Please check the photos for a slight scratch on the NumLk key.*