Logitech M170 Wireless Mouse, Logitech Advanced 2.4 GHz wireless technology. This works for 12 months on a single AA battery and is compatible with Windows, Mac and Chrome.
Compatible with windows, mac, chrome os and android.
Includes advanced optical tracking mouse, 1 aa battery, user documentation and full product support.
Wireless range 10m.
Approximately 12 months battery life.
Batteries required 1 x AA (included) .
Manufacturer's 2 year guarantee.
May not be many left but I got three for family members. Seems a good price as over 10 quid elsewhere.