This is an authentic Tabra bracelet that I've owned for over 20 years. These cuff bracelets are rare and hard to find, and the bronze moon face is gorgeous. The magnified photos show more detail than can be seen with the naked eye. 

It has some give to it, so it can be adjusted to fit your wrist, within reason. It fits well on a 6 to 6 1/2 inch wrist. But if your wrist is larger, it can be carefully bent out to about 7 to 7 1/2 inches, and it will stay that way. The face is about 5/8 of an inch across, and the cuff part of the bracelet is just over 1/2 inch tall.