Versatile Functions: The tuning fork set is multi-functional, whether used for music or health purposes, it produces a long and clear vibrating sound that can be used to clean crystals, clean household spaces, or for repair, sound, playing with your pets, and more. Multiple Models to Use: The tuning forks come with 4 frequencies, including 128 Hz, 256 Hz, 512 Hz, and 528 Hz, available for music, also suitable for yoga and meditation, especially 528 Hz is the frequency of, which makes people relax when used in meditation. Easy to Carry On the Go: Technological tuning forks with ergonomic design are made of materials, compact in size and light in weight, you can use them anywhere, which you can flexibly; Put them in your bag or in the included pouches, and then carry them with you. Quality Material: Tuning forks for the body are made of quality aluminum material, impact-resistant and non-magnetic, sturdy and solid, strong against breakage or bending, in addition, the silicone tuning fork hammer is made, soft and soothing, serving you for long periods. Thoughtful Tuning Fork Accessories: The music tuning fork set includes some tuning fork accessories, such as tuning fork hammers, polishing cloth, and pouches, to provide you with more convenience; In some situations, you can make the most of to wipe or store, without making a mess. Color: black+silver+wood Material: Aluminum alloy + wood Package Contents: 4 * Tuning forks 1 * Polishing cloth 4 * Pouches 2 * Tuning fork hammers Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3cm.