4 transmission channels: Two Bluetooth® 5.0 low energy channels, one 2.4 GHz wireless channel and one wired channel Extra-small nano receiver for wireless operation Removable USB-A to USB-C cable for data transfer and charging the lithium battery AES-128 encryption in Bluetooth® and 2.4 GHz mode Includes transport bag made of recycled plastic Precise CHERRY SX scissor mechanism for an ideal operating feeling Rechargeable multi-device compact keyboard with 2.4 GHz wireless, Bluetooth® 5.0 and cable connection Keyboard Bluetooth version 5.0 Built-in memory No Frequency band 2.4 GHz Windows keys Yes Keyboard keys operating life 10 million characters Keyboard number of keys 79 Keycaps material Acrylonitrile butadiene styrene (ABS) Numeric keypad No Keyboard form factor 75% Pointing device No Keyboard language German Keyboard layout QWERTZ Keyboard key switch technology Cherry SX Keyboard key switch Scissor key switch Device interface USB + RF Wireless + Bluetooth Connectivity technology Wi