• Highly stable and accurate readings with a large LCD display.
• Designed for simple one-hand operation.
• Automatically calibrates to pH 4, 7 and 10 buffers and can be adjusted to recognize non-standard buffers 
• Features hold function, and auto power off with low battery indicator.
• The case is IP65 waterproof and will float if accidentally dropped into the water.
• Auto 3pt calibration
• Auto buffer recognition
• Auto temperature compensation
• °C & °F Display

Specifications: 

• pH Range: 0 to 14
• pH Resolution: 0.1
• pH Accuracy: ±0.1
• Dimensions: 9¼" × 1¼" × 1" (245 × 35 × 22 mm) Probe: 5" × ½" (120 mm × 12 mm)
• Weight: 2.5 oz (71 g)
• Comes with 2 button-cell batteries and a built-in electrode kept moist with a protective cap.