Feature: 1. The LCD has a luminous display, and the measurement results can be directly displayed on the screen for easy observation. 2. Using the latest microcomputer technology, it is specially designed for on site rapid measurement, which is suitable for providing reliable measurement results in harsh environments. 3. The response speed is fast, easy to use, stable and high, and easy to carry without frequent adjustments. 4. Easy to operate, install 4 x button batteries (not included), insert the measuring probe into the liquid to display the value. 5. Made of high quality PVC material, it is durable, wear resistant, corrosion resistant and can be used for a long time. Specification: Item Type: PH Meter Material: ABS Color: As shown in the picture Product Size: Approx. 175x49x27mm / 6.89x1.93x1.06in Weight: Approx. 122g / 4.3oz Battery: 4 x 1.5V LR44 button battery(Not included) Range: 0.00~14.00PH Resolution: 0.01PH Accuracy: ±0.1PH Temperature Compensation: 0℃~50℃ Working Temperature: 0℃~50℃ . Package List: 1 x PH Meter(Battery Not Included)1 x Debugging Tool1 x Instruction Manual Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.