The greatest advantage is its compactness. I obtained a clock that can always be checked without changing the size of the toolbar.
You can utilize more screen space by not having to keep the taskbar always visible. When the taskbar is movable, it's difficult to check the clock while using the browser in full-screen mode. However, with this feature, you can achieve it simply by moving the cursor to the toolbar.

時計をオリジナルにできるのがすごく気に入っています♪とてもいいですね！カラーはyellowgreenにし、オプションからCUSTOM…で、オリジナルに打ち込みました。★MM/D（ddd）H:mm

very good and useful

Easy to configure, handy to use. Donate to him if you like it!

Exactly what I was looking for!

This is a wonderful small clock! Great job with adding the ability to customize the display colors and the tooltip text!!

Is there any chance the clock could be made larger? It would be easier to see.

Now, that's a really nice design! All pure, real time colour picker, mouseover date, and, actually you can read this itzy bitzy teeny tiny bugger! arigato

Was fine until recently, when I noticed the time being displayed appeared to change to UTC instead of local.

No sure if Firefox or extension but I thought I should mention it.