This carat scale is specially designed for use as a gold, milligram, jewelry, laboratory, diamond, and carat balance. It is a professional mini scale with high precision (20g / 30g / 50g, 0.001g) suitable for use in home kitchens for measuring food, cooking ingredients, powders, and other small items. Features include a precise digital milligram scale with 20g / 30g / 50g capacity and 0.001g readability. Large 5-digit blue backlit LCD screen allows for easy reading in multiple units: g / oz / ozt / dwt / ct / gn. High-precision digital scale ideal for weighing gold, jewelry, medicinal powders, and other small items. Includes a counting function (PCS key) for accurate piece counting and a tare function for precise weighing results. Comes with a windscreen to protect against environmental interference and maintain weighing accuracy. Auto power-off function helps conserve battery life. Compact and lightweight design for portability. Specifications: Color: Black Material: ABS Capacity * Accuracy: 20g * 0.001g / 30g * 0.001g / 50g * 0.001g (selectable) Units: g / oz / ozt / dwt / ct / gn (switchable) Linearity: 0.003g Repeatability: 0.002g Display: 5-digit LCD with blue backlight Functions: ON/OFF, UNIT, TARE, PCS Auto shut-off time: 1–5 minutes (adjustable) Power supply: 2 x 1.5V AAA batteries (not included) Operating temperature: 0–40°C (32–104°F) Platform diameter: 32mm Product dimensions: approximately 144 x 85 x 50mm (5.7 x 3.3 x 2.0in) Product weight: approximately 140g (5.0oz) Package dimensions: approximately 16 x 10 x 7cm (6.3 x 3.9 x 2.8in) Package weight: approximately 294g (10.4oz) Package contents: 1 x Digital scale 1 x 20g calibration weight 1 x Weighing pan 1 x Pair of tweezers 1 x User manual