Good Morning
Please can anyone suggest a watch opener to crack the case back of this watch?
I have found on the watch manual it says to prize up the cover at 12 & 6 o’clock locations on the edge of the cover but it seems stuck steadfast.
I want to change the battery and see it it works.
Lastly there seems to be a Mode button missing, is this an easy fix or not and if so is there anywhere that sells missing parts for a watch this old?
Thanks in advance…

Seiko Case Back