Tuning fork workmanship and high precision. Aluminum alloy construction for its dependable and rigid strength as well as its quality. Resonance Box is made of wood, and the tuning fork is placed on this wooden speaker, which has an amplification effect. The sound quality is not overly exaggerated, and you feel the resonance effect is more profound and stable, listening naturally and comfortably. for deep relaxation, repair healing, relieving stress pain, improving attention, purifying the mind and body. Suitable for scenarios such as yoga therapy, SPA aromatherapy, tuning fork resonance teaching, hearing tests, meditation etc. that is a great gift for Valentine's Day, Father's Day, graduation, birthday, promotion, vacation etc. It would bring a clear and nice sound to all your families, even your cute pets. Color:Silver & Wood Material:Aluminum Wood Package Contents: 1 x Tuning Fork(528 Hz) 1 x Resonant Box 1 x Hammer 1 x Storage bag 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.