A full Set Replacement Keyboard keycaps for Logitech K810 Bluetooth Illuminated - AliExpress
Original Charging Cable for Logitech K810 K800 WIRELESS KEYBOARD
Keyboard Science] TIL that the Logitech K800, the K810 AND the M515 "Couch Mouse" all use a variation of this proximity detection technology to save battery life : r/MechanicalKeyboards
Logitech Bluetooth Illuminated Keyboard K810 Review