Jewelry Scale, Accuracy (0.001g) up to a weight range of 50g,Easy-to-read Large LCD display.Digital Scale, Compact design with fast and accurate measurement with automatic and easy manual calibration.Smart Weigh Scale, Will work great for any of your mailing, jewelry, reloading, and medicinal materials.High Precision Scale, Option units: g/oz/ozt/dwt/ct/gn, Flip-open lid protects the delicate weighing surface.Scale Series is a great durable and compact pocket scale for those who are seeking the on the go high-tech portable scale.It is not only compact and convenient but works like a charm. Combines high precision with the ultimate in convenience. Features a flip open cover to protect the weighing platform.The blue backlit LCD display helps make the numbers viewable and easy to read. The intuitive protective cover provides protection for the scale. It is sleek, compact, and lightweight. The convenient tare function allows you get the net weight of a product you are weighing. How to Calibrate Turn the scale by pressing ON/OFF Key. Wait for the display to show ''0.000g'', the press and hold ''MODE'' Key till the display shows ''CAL'', then release. Press ''MODE'' Key again, display will flash ''50.000'' followed by the required calibration weight. Place the required calibration weight on the center of the platform, display will show "PASS", then return to narmal weighing mode.Calibration is complated! Repeat above steps if something goes wrong. Specifications Maximum capacity: 50g Accuracy:0.001g Function Keys: Power, Mode/Unit conversion (M), Tare (T), Pieces (PCS) Large LCD Display with a blue backlight Powered by 2 AAA 1.5 V DC batteries Product Size:117x 67 x 25mm Note: For accurate measurements, please lay the scale on a hard and flat surface, put the ingredients in the middle of the scale in a windless, electromagnetic-free environment.