Practical Design: The built-in sensor system in the portable mini scale can give you immediate and accurate results; the product's maximum weight is 200g, and the weighing accuracy can reach 0.01g; LCD display and tare function design, the electronic scale is easy to read. Wide Range of Applications: The portable mini scales can weigh all kinds of light and small objects, suitable for food, gemstones, coins, jewelry, gold, etc. Package Contents: You will receive 1 pc mini scale (with battery) that looks like a car key, stylish and simple; advanced sensor technology provides fast and accurate response, usually attached to keys for easy portability. Product packaging quantity: 1 Function: Strong practicality: This car key-shaped electronic scale can be hung on a keychain and is easy to carry. LCD display with blue backlight for easy reading. Exquisite style, strong practicality, and wide range of applications. Precautionary Measures: 1. The margin of error is less than 0.005g. 2. Use the scale in a windless place and in a stable environment. 3. Calibrate and tare before weighing. 4. Keep away from speakers and other magnetic devices.