4mm thick glass High accuracy of measurement per 1 gram. Activates / Deactivates automatically. It can weigh objects from 1 gram to 50 kg. It has 4 units of measurement: Kg / Lb / G / Oz. It has an LCD screen of 60 x 20 cm. Low battery and overload indicator. Small size for easy carrying 16 x 23cm It works with 2 3A batteries (included).