Automatic pH calibration – up to 5 points (NIST, USA pH buffers) / up to 6 points (DIN pH buffers)
0.01 pH resolution
Offset and average slope display 
Automatic / manual temperature compensation and temperature calibration function
ORP calibration option
Dissolved oxygen (DO) concentration in ppm (mg/L) and % saturation
0.01 mg/L or 0.1% DO resolution
Compensates salinity, temperature, and atmospheric pressure 
Up to 2 DO calibration points 
Auto log data; built-in memory can store up to 500 data
Auto shut-off (programmable: up to 30 minutes)
Auto stable, auto hold, and real time measurement modes
Calibration alarm (programmable: up to 90 days)
Built-in electrode holder allows 2 electrodes to be attached
Monochrome LCD with white LED backlight: 50 x 50 mm
Phono jack output for connecting the meter to computer for software upgrade 
Casing is IP67 waterproof/dustproof, shock & scratch resistant, non-slip
Powered by 2 x AA batteries
Packaged with electrodes and calibration solutions in carrying case