No sorry on this one the cadence is only at the bottom, it only shows speed in the main one

All screens show speed as the main top display. Below is the alternative infomation which is shown along with speed. The alternatives are -Distance 1, Distance 2, Average speed, Max speed, Elapsed time, Current time, Cadence.
The only down side is that average cadence is not recorded.

My old eyes also have problems telling the cadence figures except in full light. The smaller digits are not nearly as clear and you cannot make cadence the principal display.
BTW, the unit also suffers from interference from flashing front lights. (That fact is hidden in the fitting instructions) It will stop taking readings for a while then start again - intermittently. Turn the light to permanent beam and the interference stops.
There is no back light which is also a drawback. If I'd known these things, I would have chosen another computer - with a larger display, less prone to interference and with a back-light. In fact just like the V3.

The time of day is an option for the secondary display (smaller digits at the bottom of the display). You can cycle through: distance 1, distance 2, odometer, average speed, max speed, time of ride, cadence and time of day. I think that is all. Speed is always shown on the larger figures.

Yes it does but you do have to scroll round to it , the display always shows speed in large text and whichever secondary reading you have selected, in smaller text.

No it has to be on the back wheel to pick up the cadence, it fits out of sight on my bike and looks good

It cannot do.
Please read a description well

good luck

not if you want cadence as well?

cadence and speed sensor are in same unit, so it needs to be mounted on the chainstay.

Can't comment on the Giant, but if it helps, I have this computer fitted to both my bikes, a Focus Cayo Pro, and a Ribble 7005 Winter bike.