-Material: tempered glass -Self-calibrated bathroom scale provides precise and instant measurement measurements with step-on technology, auto on/off function, and low battery indicator -High precision measurement: 4 precision sensors provide precise weight measurements with a maximum weight of 396.9 lbs (180 kg) -USB Charging: It can be charged with mobile power, plug and laptop, convenient and fast. One charge time is 2 hours, 1,000 times usage, can be used for 4-6 months -LCD Display: High brightness LCD display allows you to measure at any time at night and get clear measurements from any angle -Safety Design: Rounded corners make the markings look smooth and prevent scratching your skin. Sturdy enough to hold up to 350 lbs