Check the listing for details. Bathroom Professional Mechanical Dial Body Weight Analog Precision Scale 400Lbs. Color: Black, Condition: New. Listed at 38.99 USD. 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 with a 0.1 lb / 0.05kg accuracy, 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, 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 '0.00'. Step back on the scale to weigh with accurate results