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 and 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 Parts List: 1xMagnetic Keychain 1xChange Pincher 1xTest Hammer 4xPincher Cover 1xMagnifying Glass 1xStorage 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 hamm : 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 pocket pinger coin 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.