Etekcity Digital Body Weight Bathroom Scale - Black - Staying fit and healthy is just a step away This scale is auto-calibrated, so you simply step on its large tempered glass platform and receive immediate results displayed on a sizeable backlit LCD display. Sophisticated sensors ensure that your results are within 0.2 lbs. of whatever is being weighed, ensuring accurate weight measurement time after time.Please 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.5. This scale was designed for measuring weights of at least 11 lb. For lighter objects, we suggest an Etekcity Kitchen Scale.Features- Etekcity Body Weight Scale- Weight: 180kg (400lbs)- Weight Units: lb / kg- Automatic Multifunction for Low Battery/Overload Indication- Auto On/Off- LCD Display- Platform: 6mm Tempered Glass- Battery: 2 x 1.5V AAA batteries- Product dimensions: ‎ 29.97 x 29.97 x 2.03 cm; 1.8kgIncludes- 1 x Body Weight Scale- 1 x User Manual