Botta Design battery replacement

Evening all

Bit of a long shot, but has anyone ever changed a battery on a Botta Design uno (single hand)?

I’ve just sold the watch and when I was giving it a final clean, and the battery has gone (not always easy to spot a dead battery on a single handler if you happen to check around the time it stopped…..couldn’t make that one up).

Botta suggest as usual, that specialist tools are needed so it’s either back to them or to one authorised uk dealer. A quick google suggests that whilst a few say that is indeed the case, some others it can be done although it’s a a bit fiddly - it looks to me to be a snap on case

Given the watch has sold I was hoping to sort tomorrow and a local jewellers or maybe a Timpsons - anyone with first hand experience?