The Healcan body weight scale utilizes U-power technology, allowing you to charge the scale by simply pressing the charging bar. No batteries or charging Oversized Digital Bathroom Scale Battery Free, Highly Accurate Scale 550lbs, Extra Wide Scale required. It's an eco-friendly choice for our planet. Simply press the u-power button twice (the middle button) and hold for a few seconds to get a clear reading of 0.0 and start weighing. Switch between pounds and kilograms by pressing the button at the back of the scale The Healcan weight scale is perfect for pregnant women as it doesn't generate electric current, ensuring the safety of both mother and fetus. It's also suitable for senior adults and individuals with reduced mobility. Place the extra-wide digital bathroom scale on a secure, flat surface for precise readings. Avoid uneven ground or carpet. Keep your feet dry for optimal performance. Our scale provides consistent measurements up to 550 lbs/250 kg with high-precision sensors and 0.2 lbs/0.1 kg increments.