Black High Precision Portable Multifunction Lab Powder Scales With Calibration 100g X 0.001g mg Scale: (Accuracy: 0.001g, Weighing amount: 0.005g, The error range is within 0.005g) Utilizes the latest high precision sensor system and heavy-duty wind shelter to weigh more accurately. Better protect your health and more accurate for your demand. 2 Power On Ways: this scale can be powered on by AAA battery, this scale also can be powered on by connecting to the power supply by USB wire. (not for recharge). Good Quality: Digital mg scale kit with large backlit LCD for easy reading with 8 necessary measurement units, can convert between G, MG, OZ, OZT, DWT, CT, GN, and TL. Even the weight of a feather can be weighed. and this scale has been certified by FCC, CE, and ROHS. The 100g weight has been certified by JJG99-2006, Level: M1. Offer. The powder scale with the "PCS" function enables you pieces counting such as pins, beads, screws; The "TARE" function will provide a net weight; The "MODE" function helps you choose the proper unit and calibrate the pocket scale before weighting. Includes carrying case with tweezers, plastic pan, tray and 100g calibration weight. Powered by 2 AAA batteries? including?NEWACALOX scale with 3 YEARS brand support. All of the mg scales are individually tested. If you have any questions please contact us. We suggest you read the user manual before using it.