For best accuracy, please place the scale on a hard, flat surface. Avoid carpet or soft surface. High accuracy – 4 latest-version high-precision sensors, using technology from Germany. Multifunction – Auto calibration, auto-off, low battery and overload indication, easy to read backlit LCD display. Strong Design – 6mm thick tempered glass provides exceptional sturdiness, large 12″ x 12″ platform. US-BASED CUSTOMER SERVICE-100% satisfaction guarantee! 1 YEAR WARRANTY, plus lifetime support provided by Etekcity.