Precise and Professional: Through pristine resonant frequency analysis, it can verify from 1/10 ounce to 10 ounces, meeting certification standards and ensuring professional and reliable authentication results Practical Tool: Covering acoustic resonance testing and magnetic composition testing, it provides multi factor authentication for gold and silver changes Efficient & Easy to Use: Simply place a change in the included holder to initiate resonance analysis, intuitively identifying authenticity through acoustic characteristics. The magnetic snap on design makes metal composition testing simple and efficient, requiring no special knowledge Platform Compatibility: Connects to analysis apps, supports advanced analysis and automated report generation, ensuring convenient and comprehensive authentication documentation Pocket Size: Easily fits in your pocket for professional authentication anytime, anywhere, ideal for collectors and merchants verifying Detailed description: Parts List: 1 x Magnetic Keychain 1 x Change Pincher 1 x Test Hammer 4 x Pincher Cover 1 x Magnifying Glass 1 x Storage Bag Description : This pocket pinger tester kit utilizes laboratory grade , including acoustic resonance testing and magnetic composition testing, to deliver professional and accurate results. It is compatible with multiple major authentication systems and is easy to use Features : Meet Your Needs : Compatible with mainstream authentication systems, it meets comprehensive authentication needs Specification : Product Name : Pocket Pinger Tester Kit Materials : Stainless Steel , Aluminum Alloy Color : Black Magnetic keychain : 4.5 cm / 1.77 inch Change pincher : 12x3.5 cm / 4.72x1.38 inch , lanyard : 23 cm / 9.06 inch Test hammer : 14 cm / 5.51 inch Magnifying glass : 11x4.5 cm / 4.33x1.77 inch Storage bag : 16x10.9 cm / 6.3x4.29 inch Pincher cover : 2 cm / 0.79 inch Note : 1 . This product is not suitable for children aged 13 and under 2 . There may be slight differences between the picture and the actual color of the commodity . We try our best to show you the exact color 3 . Please allow slight dimension differences due to manual measurement Color: As Shown Material: Metal Package Contents: 1*set gold tester Only 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.