The i250 is designed for very high precision. The Steel-reinforced 6"x6" tray gives this scale best in class 4-corner weighing. 3 point professional linearity calibration means you will probably never have to recalibrate your i250. Features include: Auto-off, Tare, Memory, Additive Weighing, Beep Function, HOLD Function, reads in 4 modes, and more!