Open the Settings app on your watch. Tap on the top item, Time. Tap on the button in the middle of the screen. Turn the Digital Crown to adjust the time; tap Set when done.
Windows Vista does not have sufficient protection on it's own. Avast is legit, and it runs on the background, because it's protecting your system all the time. Run an updated full scan with: Malwarebytes and Spybot Search & Destroy Therafter check through with your anti virus, just to ensure it still works.
By 2015, Avast had the largest share of the market for antivirus software. In July 2016, Avast reached an agreement to buy AVG for $1.3 billion. AVG was a large IT security company that sold software for desktops and mobile devices. In July 2017, Avast acquired UK-based Piriform for an undisclosed sum.