Cherry KW 9100 Slim Wireless Keyboard Rechargeable with SX Scissor Mechanism, Silent keystroke Quiet Typing with Thin Design for Work or Home Office.

Wireless RF or Bluetooth transmission the choice is yours. A switch on the keyboard and mouse lets you toggle instantly between Bluetooth and 2.4 GHz connectivity
With the KW 9100 SLIM, you can easily switch back and forth between RF or Bluetooth transmission. The magnetic support bar can be attached and detached in seconds, depending on your angle preference.
Connection either via Bluetooth or 2.4 GHz wireless AES-128 encryption. Built-in lithium rechargeable battery with USB-C connection Status LEDs for the CAPS LOCK, NUM and SCROLL keys
The built-in rechargeable battery allows you to work for weeks without charging the keyboard, but after that, simply plug the included USB-A to USB-C cable into a free port to recharge even while working.
The wireless keyboard is fitted with a built-in metal plate for maximum stability and rigidity. If you prefer a steeper angle while typing, you can adjust it using the removable magnetic bar. CHERRYs own SX scissor technology mechanism with a low-profile keystroke ensures an ideal typing experience.