Having Versatile Performances: our tuning forks set is multifunctional, whether applied for music, it produces a long and clear vibrating sound that can be applied to clear crystals, clean house spaces, or playing with your pets and more Multiple Models to Use: our tuning forks for come with 4 frequencies, including 128 Hz, 256 Hz, 512 Hz and 528 Hz, available for music, also suitable for yoga and meditation, notably, 528 Hz is the frequency of heartbeat, which makes people calm when applied in meditation Easy for Your Traveling: our technology tuning forks with ergonomic designs are made of reliable materials, compact in size and light in weight, you can use them somewhere as you want flexibly; Put them in your bag or store them in pouches provided, and then carry them around with you Quality Material Selection: our body tuning forks are made of quality aluminum material, impact resistant and non magnetic, sturdy and solid, strong against breakage or fracture, besides, the silicone tuning fork hammer is well made, soft and soothing, serving you for periods of time Considerate Tuning Fork Accessories: our music tuning fork set comprises some tuning fork accessories, like tuning fork hammers, wipe cloth and pouches, to provide you with more conveniences; In some situations, you can get the most out of them for wiping or storing, not making a mess Colour:black+silver+wood Material:Aluminum alloy + wood Package Contents: 4 * Tuning forks 1 * Wipe cloth 4 * Pouches 2 * Tuning fork hammers 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.