| This scale can be used as a jewelry scale, laboratory scale, diamond scale, and carat scales, etc. It can be used to measure the weight of drugs, jewelry, coins, pills, powder, diamont, etc. High Accuracy: High-precision milligram scale; built-in sensitive high-precision sensitive sensor; accuracy 0.001g;up to 50g. Auto calibration, powered by 2 x AA Batteries or by USB Cable. Note: this is not a battery charging connection, the scale uses non-rechargeable batteries. Accuracy of 0.001 grams, use I-shaped sensor, fast reaction speed, accurate and stable with large blue backlit display, easy to read, compact size, portable, lightweight. Cover design, external environment disturbance | |