Another view of it and here are the specs:
Measurement target: Seawater and/or Synthetic Seawater
Measurement Method: Electric Conductivity Measurement System
Salinity Measurement Range: 5ppt-40pptwith accuracy of 2 ppt variance
Temperature Measurement Range: 0 - 70 deg Celcius with accuracy of 1 deg variance
Specific Gravity: Range 1.000 - 1.032 with accuracy of 0.002 S.G. variance
Power Supply: LR44 or LR1154 Button Battery x 3 pcs
Battery Life: About 3 months based on 3 times use per day
Size: 16.4 (D) x 32 (H) x 255 (W) mm
Weight: Approximately 57g (including battery button)
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