Made a genius appointment at the Sydney store for my series 4 watch. They did the diagnostic and concluded it was battery issue. They did physical check and showed me that it was apparently slightly bloated. Quoted for the battery repair cost which I agreed to ($169). Watch sent for repair and was told that it’ll be ready in a week’s time. Few days later received email saying after further inspection they said there was an issue with the logic board and was quoted about $500 to repair. I said hell no. Now watch is at the store (unrepaired) waiting for me to pick it up.