C - Basic sex drive, fear and trauma, and where energy may lay dormant. Research shows: 432Hz is the most relaxing and comfortable frequency. Frequency:432Hz Colour:White Material:quartz Size:203*153mm Package Contents: 1 * Crystal Singing Bowl 1 * Rubber O-ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.