Versatile performance: The tuning fork set is multifunctional, suitable for both music and health. It produces a long and clear vibrating sound, which can be used for crystal clearing, cleaning or repairing home environments, sound production, playing with pets, and more. Multiple models for use: The tuning forks include 4 frequencies, including 128 Hz, 256 Hz, 512 Hz, and 528 Hz, which are suitable for music and also for yoga and meditation. In particular, 528 Hz is a frequency that calms people when used in meditation. Easy to travel: The technical tuning forks with ergonomic handles are made of high-quality materials, they are compact and lightweight, so you can use them flexibly anywhere. Put them in your bag or the included pouches and take them with you. High-quality material: The tuning forks are made of high-quality aluminum, they are shockproof and non-magnetic, durable and strong, resistant to breakage or corrosion. In addition, the silicone tuning fork hammer is soft and soothing, and it will last a long time. Thoughtful tuning fork accessories: The music tuning fork set includes some tuning fork accessories, such as tuning fork hammers, cleaning cloth, and pouches, which will provide you with more convenience. In some situations, you can use them to best wipe or store to avoid clutter. Color: Black + Silver + Wood Material: Aluminum alloy + Wood Package contents: 4 * Tuning forks 1 * Cleaning cloth 4 * Pouches 2 * Tuning fork hammers Only the above package content, others 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 +/- 1-3 cm.