Built for precision and performance The ultra chic tempered glass platform is not only durable but also has an autoon/off feature for superior convenience and maximum battery life. Low battery and overload indication deliver vital safeguards during use. Specification Weight Capacity: 400 lb (180 kg) Graduation: 0.1kg/0.2lb Units: Kg / Lb Dimensions:12"x12"x0.7" Platform: 8mm tempered glass Auto-Multifunction: Low battery/ Overload indication; Auto on/Off/ Zero LCD Display-3.1" Note: 1. For best accuracy, please lay the digital bathroom scale on hard and flat surface, and stand on the central area. Avoid carpet or soft surface. 2. To avoid inaccurate weight results, please re-calibrate the scale after physically moving or shifting it or when replacing the batteries. 3. To calibrate, apply weight on the scale, then step off and wait 10-15 seconds for the LCD screen to display "0.0". Then, step back on the scale to weigh with accurate results. 4. Body weight naturally fluctuates throughout the day. People are lighter when they wake up, heavier in the middle of the day, and lighten again toward the end of the day.