That’s quite scary to watch.
Reminds me of my Timex (I think) ‘Tag F1-a-like’ when I was at school & couldn’t afford the real thing.
Battery needed changing, to save money I purchased the battery, removed the case back myself & then couldn’t press it back in.
Wood work school vice. Tighten, nothing, tighten, pop goes the case back & bang goes the crystal.
My first and last efforts with doing anything with watches beyond changing straps!
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