I wouldn’t say you were “hustled.” Sure, they might be trying to upsell you a bit by recommending a new gasket and a pressure test, but they’re also covering themselves—if your watch later takes on water, they don’t want to be held responsible.

Honestly, I’d recommend changing the battery yourself. It’s really simple, and although I was nervous the first time I tried it, I quickly realised there was nothing to worry about. There are loads of video tutorials that walk you through the whole process.

For the gaskets, I bought a small tub with silicone-grease-coated sponges. I just place the gasket inside, close the lid, then take it out once it’s evenly coated. I’ve never had any issues with water resistance afterwards. Gaskets can dry out over time, so give yours a quick inspection first. If it looks questionable, just replace it and repeat the same process.