Tuning fork workmanship and high precision. Aluminum alloy construction for its dependable and rigid strength as well as its corrosion resistant 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 will feel the resonance effect is more profound and stable, listening naturally and comfortably.442 hz is the frequency of love that Perfect for deep relaxation,DNA 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.442 hz tuning fork set with elegant appearance and considerate design, 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.Colour:Wood Color & SilverMaterial:Wood + aluminum alloyPackage Contents:1 x Tuning Fork1 x Resonant Box1 x HammerOnly 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.