Benefits: Easy-to-read LED light display Test both polished and unpolished gemstones Easy to use, consistent and reliable results every time Lightweight & portable Rechargeable battery operated: enabling free travel Low battery consumption Low battery indicator What's Included: Presidium Diamond Tester Mate-C Protective carrying case Inset rechargeable battery (battery in unit). Approximately 6 hours of continuous use 120V Universal AC adaptor Recommended Operating Conditions: Optimal Operating Temperature: 18°C - 27°C (65°F - 80°F) Storage Temperature: 10°C - 51°C (50°F - 124°F)

Metal alert buzzer. No wait time between test. Retractable thermoelectric probe tip for enhanced accuracy that ensures constant pressure between probe and gemstone. Thin probe tip (.6mm) for testing diamonds as small as .02ct. Verifies authenticity of diamonds instantly.

Lower Temperature Rating: 18 Degrees Celsius. Item Dimensions LxWxH: 3.4 x 2.4 x 7.5 inches. Item Weight: 0.85 Pounds. Color: Black. Power Source: Ac & Battery. Brand: Presidium. Date First Available: July 9, 2007. Best Sellers Rank: #147,282 in Arts, Crafts & Sewing. Customer Reviews: 4.2 out of 5 stars 145 ratings 4.2 out of 5 stars. : B000TD5TRM. Batteries Required?: ?No. Batteries Included?: ?No. Included Components: ?Adaptor, Carrying Case, Rechargable Batteries. Special Features: ?Low battery indicator. Type of Bulb: ?LED. Item Package Quantity: ?1. Voltage: ?120 Volts. Power Source: ?Ac & Battery. Color: ?Black. Size: ?6.3" x 0.83" 1.18". Is Discontinued By Manufacturer: ?No. Item model number: ?PDMT-C. Product Dimensions: ?3.4 x 2.4 x 7.5 inches. Item Weight: ?13.6 ounces. Part Number: ?PDMT-C. Manufacturer: ?Presidium.