This carat scale is specially designed for being used as gold scale, milligram scale, jewelry scale, lab scale, diamond scale and karat scale. It's professional mini scale with high precision (20g/30g/50g 0.001g) which used in family kitchen food weighing, baking material, common powder, etc. Features: Accurate & professional digital milligram scale - 20g/30g/50g capacity and 0.001g accuracy. Large 5-digital blue LCD display for easy reading in different units: g / oz / ozt / T / ct / gn. Mini digital scale with high precision, perfect for gold or jewelry weighing, medicine powder or other small things weighing. The count (PCS button) function gives you an accurate count and tare weighing function ensures more precise result. With wind-shelter to prevent influencing the weighing accuracy by the interference of external environment. Auto power-off feature saves battery life for long lasting use. Mini compact size and easy to carry, take it anywhere. Specifications: Color: Black Material: ABS Capacity*Accuracy: 20g*0.001g / 30g*0.001g / 50g*0.001g (Optional) Units: g / oz / ozt / T / ct / gn (Switchable) Nominal Value: 0.003g Repeatability: 0.002g Display: LCD 5 digits Back Light: Blue Backlight Functions: ON/OFF, UNITS, TARE, PCS Auto off Time: 1-5 Minutes (Adjustable) Power Supply: 2 * 1.5V AAA Battery (Not Included) Working Temperature: 0-40 / 32-104 Platform Diameter: 32mm Item Size: Approx. 144 * 85 * 50mm / 5.7 * 3.3 * 2.0in Item Weight: Approx. 140g / 5.0oz Package Size: Approx. 16 * 10 * 7cm / 6.3 * 3.9 * 2.8in Package Weight: Approx. 294g / 10.4oz Package List: 1 * Digital Scale 1 * 20g Calibration Weight 1 * Weighing Pan 1 * Tweezer 1 * User Manual