Practical design: The built-in sensor system of the mini portable scale provides you with instant and accurate results the maximum weight of the product is 200 grams and the weighing accuracy can reach 0.01 grams LCD display and tare function design Easy-to-read electronic scales for a wide range of uses: The mini portable electronic scale can weigh a variety of small and light items for food, gemstones, coins, jewelry, gold, etc. it includes 4 necessary units of measurement for easy weight conversion and can quickly switch between units of measurement material and size with g, tl, dwt and ct: Mini portable electronic scale made of high quality metal and plastic housing, durable and portable its dimensions are approximately 2.5 x 1.3 x 0.6 inches or 64 x 34 x 15 mm, small and light, easy to use Caution: This product does not contain batteriesGREAT CUTE GIFT: Portable electronic scale is small, delicate and easy to use, perfect as a gift for family, friends or classmates They will be happy to receive such a gift package includes: You get 4 pieces of mini scales (batteries included) that look like car keys, stylish and simple advanced sensor technology provides fast, accurate response, often attached to keys, easy to carry Product Package Quantity: 4 Features: Practicality: this car key shaped electronic scale can be hung on a key chain for easy portability. LCD display with blue backlight for easy reading. Exquisite style, practicality and wide range of use. Cautions: 1. The error range is within 0.005g. 2. Please use the scale in a windless and stable environment. 3. Please calibrate and tare the scale before weighing. 4. Keep away from speakers and other magnetic devices.