TECKNET Large Print Backlit Keyboard, Wired USB-A Computer Keyboard with Wrist Rest, 7-Color Backlit, Oversized Letter Keys Easy to See, Plug-and-Play, Silent, Light Up Keyboard for Windows/PC/Laptop

Can the backlight be fixed to a single color ?

You can press the "FN + brightness key" key combination to set the (keyboard backlight) to display a single fixed color each time.

Can I still see easily when using the keyboard at night?Will backlighting cause glare that makes them hard to read?

Yes, 4X enlarged characters + backlight mode for clear visibility in dim light. It also supports brightness adjustment, Brightness adjustable for comfort.

Will my wrists ache from prolonged typing on this keyboard? Who is it suitable for?

Ergonomic design with 15° golden tilt & adjustable stand relieves wrist soreness. Ideal for seniors, visually impaired users, and those needing large, readable key characters.

Is there a lot of distance between the keyboard itself or the keycaps?

This keyboard is the same size as a regular keyboard, and the keycaps are evenly spaced. It takes time to get used to the new keyboard.

What’s the battery life of the keyboard backlight? Will it turn off by itself if I don’t use it?

If you want to turn off the backlight , you need to turn off the computer, put the computer to sleep, or press brightness key to turn on/off backlit.