There are many kinds of dragon and phoenix bracelets with different weights. For example, the old C bracelet has always been about 20 grams, so a pair of about 40 grams, stretching about 30 grams, a pair of about 60 grams.
There is also a wedding series with a wide ring of 50-60 grams, so a pair of bracelets should be 100- 120 grams.