The 7405 scale utilizes instant on technology simply step on the scale to get the weight reading. The large silver platform with built in handle can provide comfort for most foot sizes with four sensors to provide accuracy up to 440 lbs. The extra large 3.7 x 1.9 read out is easy to see from a distance. Auto off helps to preserve battery life (low battery indicator provides peace of mind). 3 AAA batteries included. Backed with a 5 year limited warranty.