Measurement range: Salinity/0~8.0%, conductivity/0~200mS/cm, temperature/0~60℃ Accuracy: Salinity concentration/±0.2%, conductivity/0~1,999μS/cm:±20μS/cm・2~200μS/cm:±2mS/cm, temperature/±1℃ Automatic temperature correction: Yes Minimum display (resolution): Salinity concentration/0.1%, conductivity/1μS/cm, temperature/0.1℃ Waterproof structure: Protection grade IPX5 Power supply: 2 AAA alkaline batteries (monitor battery included) Auto power off: Approximately 8 minutes Material: Main body/ABS resin, measurement part/glass Body size: Diameter 40 x 185mm Product weight: 114g (including battery)