Multi functional application to meet diverse needs: Two 512Hz tuning forks allow you and your companions to enter deep and relaxation, suitable for sound therapy and yoga for two people. It is also a popular choice for birthday gifts. Clear and pleasant sound quality: The aluminum alloy material gives the tuning fork a clear and bright sound quality. Each impact produces pure and stable sound waves that resonate with the internal rhythm of the human body, helping to relieve stress and anxiety, promote physical and mental harmony and health. materials, : Made of carefully aluminum alloy materials, it not only has a crisp and pleasant sound quality, but also has excellent durability and stability. Portable design, anytime, anywhere: The compact and design makes it easy to carry around, whether it's a quiet corner of your home, the embrace of nature outdoors, or a busy corner of the city, you can start your journey at any time. Colour:Silver Material:Aluminum Alloy Package Contents: 2 x Tuning Fork 2 x Hammer 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.