Developer reply by catweazle1
Rated 4 out of 5 stars
only 4 stars as theres no option to show the seconds.
Will that be an update soon?
sorry no update, when you want seconds in the Display i suggest you use Simple Timer.
https://addons.mozilla.org/de/firefox/addon/simple-timer/?src=search
To create your own collections, you must have a Mozilla Add-ons account.