Replacing Battery in the Logitech Wireless Solar Keyboard K750 (How To) - YouTube
Logitech K750 Wireless Solar Powered Keyboard
Amazon.com: AIYUE ML2032 Rechargeable Battery Replacement for Logitech K750 Keyboard : Health & Household
Merrick Chaffer's Blog: How to replace the watch battery in Logitech K750 solar power keyboard
Logitech Wireless Solar Keyboard K750 for Mac - Gray - Brown Box - Wireless Connectivity - RF - 32.81 ft - 2.40 GHz - USB Interface Multimedia, Eject, Brightness Hot Key(s) - Mac - Silver