... , more robust performance3, IP54, industrial dust, water, drop4, integration of voice, to support VOIP communication5, large memory design, easier to store data6 ... features:Size: 64 × 154 × 23/38 mmWeight: about 220 gIndustrial design: IP54 (1.2 meters high and 6 from the free ... (optional)Scanner: 1D laser or 2D laser head (optional)Keyboard design: front 21 keys, 3 keys each side, a total of ...