Precise and Professional: Through resonant frequency analysis, it verifies weights from 0.1 troy ounce to 10 troy ounces, supporting reliable authentication results. Practical Tool: Combines acoustic resonance testing and magnetic composition testing for multi-factor authentication of gold and silver items. Efficient and Easy to Use: Place the item in the included holder to initiate resonance analysis; authenticity is identified through acoustic characteristics. The magnetic design enables straightforward metal composition testing without specialized knowledge. Cross-Platform Compatibility: Connects to analysis applications, supports spectral analysis, and enables automated report generation for comprehensive documentation. Pocket Size: Compact and portable for on-the-go authentication, suitable for collectors and professionals. Parts List: 1x Magnetic Keychain 1x Coin Pincher 1x Test Hammer 4x Pincher Cover 1x Magnifying Glass 1x Storage Bag Description: This pocket pinger tester kit uses acoustic resonance testing and magnetic composition testing to deliver accurate authentication results. It is compatible with multiple authentication systems and designed for ease of use. Features: Compatibility: Works with various mainstream authentication systems to support diverse verification needs. Specifications: Product Name: Pocket Pinger Tester Kit Materials: Stainless Steel, Aluminum Alloy Color: Black Magnetic Keychain: 4.5 cm Coin Pincher: 12 x 3.5 cm Lanyard: 23 cm Test Hammer: [incomplete — omitted]