Description: High mobility thanks to its rechargeable batteries and low weight Rechargeable battery internal, operating time approx. 70 h without rear illumination. Charging time approx. 12 h over internal power supply. SLEEP-function activation time after 1, 5, 30 min Charge condition indicator: green = charged, yellow = please charge, red = almost empty Precise counting. The automatic reference optimization gradually improves the average value of the piece weighing Counting results memory adds up all individual counting operations, result is shown in total weight and total pieces 3 displays: Total weight, reference weight, total number of pieces Back lit LCD display with digit height 20 mm. Back lit, 3-way adjustable: permanent "on", by load change "on" for 3 sec, permanent off Input reference quantity of pieces (variable) + reference weight in g via numerical key pad. Target piece input check-weighing with an acoustic signal