Lost hand-held blood pressure monitor in a small green case near the beach access ramp in Penzance, Cornwall.

I lost my hand-held blood pressure monitor, which is in a small green case, while walking my dog around the beach near Penzance in Cornwall. I last remember using it to check my blood pressure after climbing some stairs at the beach access ramp. If anyone finds it, I would really appreciate having it back, as it's quite important for my health.