Weight: 9.00 oz 128 hz tuning forks are used directly on the body to stimulate your nerves and to aid in the release of tension from the body, acupressure points and other points and places associated with body therapies. Great for sore muscles, etc. Not for use on the head. 8" long. Pouch and box included. Strike the tuning fork and bring it near your ear. When the sound and vibration has stopped, repeat the process for your other ear. The fork can be used over any part of your body tho enhance cleansing and healing. You can also use it at bedtime. Activate the fork and wave it around your head and heart to induce sleep. It can be also used to charge your drinking water, food etc.