... -II Digital Simple High Precision Dual Display Counting Scale Resolution1/30000ChargePower supply / rechargeable batteryCalibrationSingle point , internal linear calibration and three points calibrationDisplayLCD ... 30,000,1/15,000,1/7500,1/3000 and dual displaying resolution2)Low battery warning ModelHXC-II-7515HXC-II- ... DC 100-240 VAC,50/60Hz Digital Simple High Precision Dual Display Counting Scale