2 cordless handset phones
This requires only one phone line to work.
The batteries were no longer holding their charge, but instead of buying new batteries, we bought a 3-phone set as we needed a third phone. (Batteries not included with this phone, but takes plain rechargeable batteries.)

Phone has; caller display so you can see who is calling
speaker, so you can talk 'hands-free'
phone book to save 80 numbers in
good volume for calls and ringer
different ring tones
easy to read screen
fits in pocket to carry in garden
easy to set up and use
can be used as intercom from one set to the other
and other functions
in original box

I will consider any reasonable offer
Available for collection/viewing in Ardara area of Donegal. Outdoor viewing only due to Covid. (We don't have it, but don't want to risk it either.)
I can send by courier (courier costs are extra)