Mark. quantum balance. . matter. plastic stainless steel. . colours. black. . specificities: mini precision scale: 600 g / 0.1 g. 3 buttons: on/off tare mode. 2 aaa batteries included. auto off function 180 seconds. plastic cover. 1 user manual (french). weight: 85g. . dimensions. length x width x thickness (cm). . 10.3 x 7.4 x 2cm. . calibration. it is recommended that you periodically check the accuracy of the balance using calibration weights. take care to be sure you are using the correct weight. turn on the balance. hold down the "m" button until the display shows "cal". press "m" again to establish the zero point. the display shows the calibration weight required. place the weight in the center of the scale. the display shows "pass". calibration is complete.. . guarantee. 3 years manufacturer