The MEINL Sonic Energy 440Hz root chakra crystal singing bowl emits a pure, resonant tone from its high-quality quartz construction. Tuned to the harmonious 440Hz frequency, you can use this bowl to balance your root chakra, enter a deep meditative state or simply bask in its long-lasting spherical resonance. Whether practicing yoga, undergoing sound therapy or adjusting your home's feng shui, the sustained ringing creates a tranquil atmosphere and promotes emotional well-being. Available in 12", 14" and 16" diameters to meet your space and volume needs, these singing bowls come with a silicone ring to protect the bowl and maximize resonance.