Freediving watch Suunto D4F battery replacement DIY

To replace a battery in your freediving watch D4F by yourself, you will need:
- a new battery CR2450
- silicone grease
- small screwdriver
- a new rubber O - ring, but for the first replacement you can reuse the old ring
- 5 min of your time...!
I am here:
www.balifreediver.com
I am also on Molchanovs network as W2I freediving instructor, so you can see my whereabouts there. Have fun and dive safe!
Mar, 2022 - I replaced the battery again, and reused the rubber ring, which I was not supposed to. I checked it, and it seemed fine. So I followed the same battery replacement process as before, in this video, and so far, it works great!