Fafeicy Portable Gem Checker Gemstone Tester Pen High Accuracy Jewelry Tester with Light Sound Prompt for Novice Expert Professional Use

Spec: Item Type: Gemstone Tester Material: ABS Weight: Approx. 140.00g / 4.94oz Working Temperature: 10-40℃ Product Size: Approx. 158x46x22mm / 6.22x1.81x0.87in Data Cable Plug: Type C Built in Lithium Ion Battery: Model , Capacity 500MAH How to Use: 1. Preheat the device for 30 seconds after turning it on. 2. The device will automatically shut down if not in use for 10 minutes while turned on. 3. When holding the device, be sure to touch the conductive plate on the back with your fingers (correct measurement cannot be taken without touching the plate). 4. Refer to the instruction manual for further details. packing list: 1 x Gemstone Tester 1 x Connecting Cable 1 x Accessory 1 x Instruction Manual

• [Long-lasting & Convenient] Powered by a built-in 500mah lithium-ion battery with type-c charging. the 6.22 inch tester operates in 10-40℃ environments, providing consistent performance.
• [Professional Testing Procedures] Works by measuring thermal conductivity differences between materials. for accurate results, always follow proper testing guidelines and avoid unsuitable surfaces like metal, skin, or liquids.
• [User-friendly Operation] The gemstone detector features clear visual and audio prompts - a beep sound and indicator light activate when testing genuine stones.
• Compact and Easy to Use: This small portable gemstone detector can fit in any wallet or backpack, and is simple to operate. Just place the probe vertically on the object being tested and press the switch for getting results.
• [Portable & Versatile] Designed for both loose and mounted gemstones, this compact gem checker is perfect for jewelry professionals and hobbyists. its lightweight abs construction (140g) fits easily in wallets or backpacks, making it ideal for on-the-go testing at gem shows, jewelry stores, or personal collections.