strap replacement

I’m a little worried about the plastic fin strap retaining pin design. I figure there is a chance it can break, I will break it removing it, or in the event I lose it on the boat changing a strap out I’d be hosed. I’m considering my options since SP told me they don’t sell the pins separately...

Dears, Did anyone try to replace the suunto D4/i rubber strap with a metal one .. there is no commercially available one from suunto. If yes for for which watch did it originally belong.. any support is much appreciated. Cheers Salem

Two questions 1 . How do I get the pins out that hold the straps in place in place. I wish to replace the straps. 2. Where can I buy a new battery for the same computer ( I live in Mexico)