Quick test mode Reading stability indicator Precise results Ease of use Internal memory storage and external memory on usb device Compact size saves space in your lab. Battery backup up to 4 hours with low battery indication Auto power off after 5 minutes Print facility using usb storage device Usb port for pc interface (at factory calibration) Stirrer interface to control rpm Simultaneous display of conductivity and temperature Atc temperature sensor 4-line lcd display In built 8.4 v cvcc charger adaptor which takes care of power fluctuations Built-in time and date function Dimension:280 mm (w)x210 mm (d)x90 mm(h) Weight:1 kg