Features: Made of high-quality impact-resistant & non-magnetic aluminum material, which is highly polished & oxidized. Using 64hz design can provide accurate frequency response. Tuning forks are easier to strike, have a longer vibration frequency and a higher pitch. Tuning fork therapy can help induce a deeper state of relaxation and purify the body and mind. The unique metal frequency of the tuning fork can enhance people's ability to recognize sounds and improve hearing. It is also suitable for children to use, improve children's sensitivity to sound and attract attention, reduce infant anxiety, and effectively prevent infants from crying. Specifications: Material: Aluminum Alloy Length: approx 24.5cm/9.6in Color: silver/gold 64 Hz Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Tuning Fork