Note - For best accuracy, please place the scale on a hard, flat surface. Avoid carpet or soft surfaceHigh accuracy - 4 latest-version high-precision sensors, using technology from GermanyMultifunction - Auto calibration, auto-off, low battery and overload indication, easy to read backlit LCD displayStrong Design - 6mm thick tempered glass provides exceptional sturdiness, large 11.8 in x 11.8 in platformPackage Contents: 1 x Digital Weight Scale, 1 x User Manual, 2 x 1.5V AAA batteries, 1 x Tape MeasureDirections: In Some Cases You May Need To Manually Calibrate The Scale After Changing Batteries Or Moving The Scale. To Manually Calibrate, Step On The Scale Then Step Off And Wait For The Lcd Screen To Display '0.0'. Step Back On The Scale To Weigh With Accurate Results