Sinclair Electronic Digital Watch. Vintage. Original box and strap.

I am selling my Sinclair black watch, I bought this when they first came out. I wore the watch quite alot. As shown in the picture there is some wear on the metal strap where some of the black has come off. On one of the pictures it shows the battery carrier where the batteries sit on, one side has had a little bit of corrosion.There are two batteries but i think they are flat so cannot test to see if the watch works. The watch will come in its original case as shown in the picture. Many thanks for looking