Precise and Professional: Through raw resonant frequency analysis, it can verify gold and silver from 1/10 troy ounce to 10 troy ounces, meeting certification standards and ensuring professional and reliable identification results. Practical Tools: Covering acoustic resonance testing and magnetic composition testing, it provides multi-factor authentication for gold and silver change. Efficient and Easy to Use: Simply place the change in the included holder to initiate resonance analysis, intuitively verifying authenticity through acoustic characteristics. The magnetic snap-on design makes metal composition testing efficient, requiring no knowledge. Cross-Platform Compatibility: Connects to analytical applications, supports advanced spectral analysis, and automatically generates reports, ensuring convenient and comprehensive authentication documentation. Pocket Size: Fits easily in your pocket for professional authentication anytime, anywhere, making it an ideal choice for collectors and merchants on the go., Manufacturer: YJQXMYU