Feature: 1. It has excellent water resistance and field applicability, and all readings are automatically compensated for temperature (ATC). 2. The temperature sensor directly contacts the measured solution to make the reading accurate and fast. 3. PH meter has a large screen display with a high resolution and accuracy. With data retention function, it is convenient, fast and accurate. 4. It has a wide range of measurement, which is simple to operate, and is suitable for testing the pH value of aquariums, drinking water, etc. 5. Made of high quality plastic, durable, economical and practical, it fully meets the testing needs of various industries. Specification: Item Type: PH Meter Material: Plastic Weight: Approx. 95g / 3.4oz Range: 0.00~14.00pH Resolution: 0.01pH Accuracy: ±0.05pH Temperature Compensation: 0°C~50°C Working Temperature: 0°C~50°C Product Size: Approx. 147x27x18mm / 5.8x1.1x0.7in Battery: 2 x CR1632 3V Button Battery (Battery Not Included). Package List: 1 x PH Meter (Battery Not Included)1 x Screwdriver1 x Manual