Model Number:Health Gear8q91pdncgx Package Dimensions:21 x 9 x 5 cm Features: 1. Made of high quality material, durable in use. 2. Lightweight and mini size, portable to carry. 3. 4 in 1 function, can be used to test pH, TDS, EC and TEMP of water. 4. Easy to operate and read the digits, convenient to use. 5. Suitable for water features, hydroponics, swimming pools and other water systems. Specification: Material: ABS Size: approx. 7.2 * 1.47 inches Weight: approx. 164g/5.8oz Battery type: AG13 or LR44 Auto power off: 5 minutes Environment: 0 to 60.0 (32.0 to 140.0); RH 100%. Range: pH: 0.00 to 14.00pH EC: 1 to 19999us/cm TDS: 1 to 19999ppm 0 to 60.0/32.0 to 140.0 Resolution: pH: 0.01pH EC: 1us/cm TDS: 1ppm Accuracy (@25 / 77 ): pH: 0.05pH TEMPERATURE: 0.5 EC: 2% TDS: 2% Packing List: 1 * Water Quality Tester (battery not included) Note: 1. Please allow 0-1 inch error due to manual measurement. 2. Please note that the new type and old type of this product will be sent randomly, and make sure you don't mind before ordering. 3. The product is shipped without dust. [Water pH Tester]: The 4-in-1 pH water tester can measure pH, TDS, EC and temperature value with high precision to ensure the health of water quality [Fast Reading And High Accuracy]: With the high sensitivity glass probe, you can quickly read the results. Full 0-14pH measurement range, 0.01 pH resolution [Easy to Calibrate]: The pH meter uses a 3-point calibration method, calibrating the electrode to solutions of pH 4.00, pH 6.86 and pH 9.18 to ensure the accuracy of your measurements [Automatic Temperature Compensation]: It is no longer necessary to pay attention to the temperature of the test liquid due to the ATC function; Easy to get a reliable and stable reading at 0C-60C (-0C-122F) [Wide Application]: Ideal for home and laboratory pH testing applications, including drinking water, pool, pond, brewing, kombucha, aquariums, hydroponics, laboratory, food processing, etc. [Water pH Tester] [Fast Reading And High Accuracy] [Easy to Calibrate] [Automatic Temperature Compensation] [Wide Application]