Designed to be used with the utmost ease, Detecto's model 6745 can weigh even the most active baby. With step-by-step"structions right on the keypad, there's never any question about what to do next. The 6745 features lock-in weight ability, built-in battery charger for NiCad or NiMH batteries (15 hours charging time), a locking pin for easily removing the tray for cleaning, and sleep and auto shutoff modes to extend battery life. Detecto's model 6745 Digital Baby Scale has a lock-in weight feature which compensates for typical newborn movement. When weight stabilizes, it is "locked"" and displayed. The"fant can be removed and its weight is retained. The scale features a built-in battery charger, battery or AC power, a built-in measuring tape, and a large 1.0" high transflective LCD display. Serial output allows the scale to be connected to a printer or PC. Capacity: 30 lb x 0.1 oz / 15 kg x 0.005 kg. Tray Size: 26" W x 12.188" D / 66 cm W x 31 cm D. Overall Size: 26" W x 14.256" D x 7.473" H / 66 cm W x 36 cm D x 19 cm H. Display: 6-digit, 7-segment 1.0" / 25 mm high transflective LCD. Power: 6 "C" cell batteries or universal. AC adapter (AC Adapter"cluded) . Built-in Ruler: Measures up to 22" / 56 cm.