Microsoft doesn't make them anymore but another manufacturer bought/licensed the design... since it's perfect.

It's a keyboard combo, but the radio is encrypted and I've never missed the wire:

Battery life is great

Letters on the keyboard wore out before it ever did mechanically, last one lasted 5-6 years of heavy use, on my second now and I keep a spare in the closet.

Full sized but also lean enough to move between rooms regularly.