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.
Avast Antivirus comes with several tools and features: Antivirus: provides a range of scans and Shields to protect your PC from malware. In addition, you can access a space called the Virus Chest where you can isolate suspicious files and optionally send them to the Avast Threat Labs for analysis.