The Kalorik Bluetooth Electronic Body Analysis Scale uses advanced touch sensor technology to accurately measure weight, body fat percentage, water weight, muscle and bone mass, calorie intake, and body mass index (BMI). This "smart" scale connects with your smartphone or tablet via Bluetooth, where you can easily access all your data. Automatic user identification can store up to 8 user's data, making this scale great for families and multi-user homes. The Kalorik Bluetooth Electronic Body Analysis Scale contains four electrodes to guarantee accuracy of results. Its large, 12" x 11" tempered glass platform features a wide, easy-to-read LCD screen. Measurements can be changed to kg, lb, or stone. The scale has low battery and overload indicators, with a weight capacity of 396 pounds. Auto on-and-off feature turns the scale on when you step on it, and off when you step off it.