Specification: Size(L x W x H): Approx.11.5cm x 6.5cm x 1.7cm Weighing Platform Size: Approx.0.005g-50g Weight units: g or oz or ozt or dwt or ct or gn Power: 2 AAA batteries (not included) Auto-off: 60 seconds Weight: Approx.300g Readability: 0.001 g Scale diameter: 5cm Type: A: 10g or 0.001g Scale ( Max Weight¡Ü10g, Precision¡Ü0.01g) B: 20g or 0.001g Scale ( Max Weight¡Ü20g, Precision¡Ü0.01g) Features: - Accuracy of 0.001 grams, I-shaped sensor, accurate and stable, easy to read, compact size, portable, lightweight. - Mini digital scale can be used as a scale jewelry, scale lab, diamond scale and carat scale, ideal for jewelry Description. - Unique windproof cover design weighing accuracy. - 60 seconds turn off automatically when not in use. Package Included: 1 x Jewelry scales (A and B for your optional- A: 10g B: 20g) 1 x Calibration weights (A: 10g B: 20g) 1 x Plastic tweezers 1 x Tray 1 x English User Manual