Chakra set

Tibetan singing bowls may have some benefits, but more research is needed to support their use as a treatment for stress, anxiety, and other concerns. Some research does indicate that these singing bowls can enhance meditation and deep breathing, which may help maximize the stress-relieving benefits of those practices.
A high quality bowl will be able to hold its vibration and produce several tones, harmonics and overtones. If the vibration sounds as if it's “fluttering” away, the bowl is not high quality. You should be aware that the amount of time or effort it takes to make the bowl sing is not important