I strongly recommend against ant product by Formotion. I got a clock and thermometer as a Christmas gift from one of my daughters a while back.
The second hand fell off the clock a week after I put it on. Contacted Formotion for a warranty repair or replacement and was told I needed a receipt.
I do not ask for a receipt when I get a gift so I couldn't provide one. They refused to stand behind their product. I would not use a formotion product as a paperweight.
As to a thermometer, I want one, too, but can't for the life of me figure where to mount one that wouldn't simply roast in the direct sunlight.
My bike has no fairing, which doesn't help.