Certificate Obtained from a Public Inspection Institution in Japan This product has been tested by a Japanese public inspection institution and is certified to be 100% pure. The effects will last even with repeated use, and it can be used permanently. How to Use: 1. Apply directly to the body. Secure with commercially available plaster sheets or medical tape and apply to areas of stiffness or pain. 2. Use in handmade bracelets or necklaces. Fix to necklaces or bracelets with commercially available accessory adhesive. Product Name: 100% Pure Germanium 10 Beads (with 2 High-Purity 4mm Terahertz) Material: Germanium (100% purity, with certificate) Size: Approximately 7mm diameter x 2.5mm height Country of Origin: China Important Notes: ※ The plaster sheet in the image is an example, and this listing is for the germanium beads only. ※ Please note that for environmental and cost-saving reasons, the product will be delivered in simple packaging (delivery bag or recycled cardboard, etc.). ※ Multiple purchases are possible. Please inquire via comments. ※ We do not offer discounts. Thank you for your understanding. ☆ Immediate purchase is welcome without comments!