Specifications: Electronic Scale Colour: Black Unit: G/ct/dwt/gn/ounce/ozt Capacity: 100g/50g/20g Accuracy: 0.001g Error Range: +-0.003g Power Supply: 2*1.5V AAA Batteries (not Included) Operating Temperature: 0-40 (32-104 Degrees Fahrenheit) Automatic Shutdown: 30 Seconds Specifications: 1. High-precision Electronic Scales, Designed For Personal And Professional Use, Suitable For Weighing Gold, Diamonds, Jewelry And Coins, Etc. 2. Large LCD Backlight Display Makes The Data Clearer. 3. Equipped With Low Battery And Overload Indicators, Calibration Is Provided, Making It More Convenient To Use. 4. It Is Small In Size, Easy To Carry, And Does Not Take Up Too Much Space When You Go Out. Package Included: 1 Set* (1 Electronic Scale, 1 Weight, 1 Tray, 1 Tweezers)