Logitech K380 Wireless Bluetooth keyboard, multi-device & Easy-Switch feature, Windows and Apple Shortcuts, PC / Mac / Tablet / Mobile Phone / Apple iOS + TV, US QWERTY layout - White: Amazon.de:
Logitech K380 / Easy-Switch for Upto 3 Devices, Slim Bluetooth Tablet Keyboard - Logitech : Flipkart.com
GitHub - jergusg/k380-function-keys-conf: Make function keys default on Logitech k380 bluetooth keyboard
Ubuntu: Logitech K380 bluetooth keyboard - make function keys default (2 Solutions!!) - YouTube
Set up Logitech K380 for Linux Ubuntu 16.04 LTS - YouTube
Solaar: A Linux Device Manager for Logitech Peripherals