Amazon.com: CM Ultra Thin Silicone Soft Keyboard Cover Skin Compatible with Logitech Wireless Touch Keyboard K400 Plus (Not for Old Version K400 & K400r) (Black) : Electronics
Logitech Wireless Touch Keyboard K400R K400 With Built-In Touchpad NO RECEIVER 97855074928 | eBay
Logitech K400 vs K400r | AFTVnews
Logitech K400R Wireless Touch Keyboard with Touchpad WHITE (NO RECEIVER)