• Range -2.0 to 16.0 pH
• Resolution 0.1 pH
• Accuracy ± 0.1 pH
• ATC automatic
• Calibration 2 points - automatic
• User select 6 buffer types
• Environment 32 - 122F (0 - 50 C)
• Display LED & push to hold
• Auto-Off after 8 minutes of non-use
• Battery life 300 hours of use
• Battery type 1.5v button - 4 Included

Unit is labeled "Martini Instruments".

Martini Instruments is a laboratory equipment division of Milwaukee Instruments.