What is the Gauss rate for this bracelet, (the higher the Gauss, the stronger the magnet)?

It was very weak so I returned it. Hematite bracelets are stronger and seem to work for me.

What is the strength of the magnets? Why is in not post in the information of the bracelet?

I don't know the strength I don't have anything to measure it, all I know is that time back I took a fall and heart my hand and when I put the bracelet in a couple of days my pain was gone, I highly recommend.

Can this bracelet be expanded to larger than 7.5 inches?

Hello dear friend, thanks for your question, this copper bracelet is 7.5 inches, it could expanded to 8.6 inches, it come with a removal tool and allow you to resize it easily at home. Hoping it would help you well, thank you.

Can this copper bracelet be worn in the shower?

Hello dear friend, thanks for your question, this magnetic bracelet mede of pure copper, so you need take it off when you are showering. Copper is a red metal, also is a green metal. After a long time in the humid air, the copper surface will form a layer of patina slowly, this is oxidation. So we suggest you to take it off when you are swimming, taking shower, sweating for a long time, avoid the bracelet becoming green due to prolonged exposure to sea water, sweat or salt water. Hoping it would help you well, thank you!