Professional Precision The Milligram digital scale has an accuracy of 0.001g and a maximum weight of 50g which means that it is professional enough to be used as jewelry scale in the laboratory for diamonds and for weighing carats . Multifunctional scales The digital scale fine scale has the function of unit conversion taring calibration and counting. Automatic switch-off function (3 min). Jewelry scale with built-in rechargeable battery and USB cable. Eight weight units The pocket scale has eight weight units: g mg ct oz ozt gn dwt tl. You can change the weight unit by pressing the M according to your weighing habits. The pocket scale has an LCD display and the measurement data and weight units are clearly displayed. Easy to Carry These small digital scales are easy to carry. And the weighing bowl is well protected by the transparent cover. Within the weight capacity the electronic scale can weigh the weight of many lighter objects such as diamonds gold silver coins gems pills cosmetics tea powder and more. Package Package includes: 1 jewelry scale 2 x AAA batteries 1 USB cable 1 calibration weight 1 weighing pan 1 tweezers 1 instructions. Specifications: Capacity: 50g Units: g / oz / dwt / ct / gn / tl / ozt / mg Tare range: Tare full capacity Automatic switch-off: Switch the device off after 3 minutes of non-use Operating temperature: 10-30 Power supply: USB cable / 2 * AAA batteries Dimensions: 12 * 7 * 3.8cm Net weight: 160g Note: Only operate the scale on a stable vibration-free surface. Avoid shaking falling or shocking the scale. For accurate results please always place the item in the middle of the platform. Never charge the scale with items that exceed its capacity. Overcharging will permanently damage it. Keep your scale in a dry and clean environment. Dust dirt moisture vibrations air currents and close proximity would negatively affect the reliability and accuracy of your balance. Please calibrate the scale before use calibrate for high precision.