NZ Digital Scale MN-100 100 X 0.01GFeatures: Super contrast, backlight 2 x CR2032 batteries (Included) Full Tare Range Capacity Energy saving auto power off function (60 seconds off) Capacity: 100g x 0. 01g Units: g oz gn ct Scale Size: 85. 2 x 75. 2 x 12. 7mm Platform Size: 68. 2 x 52. 6mm Calibration: Turn on the scale. Press and hold the [M] key untill the LCD display "CAL" , release the [M] key. Press [M] key again, the display will show "CAL" followed by the required calibration