Feature: 1. Press the power button to turn on, and remove the protective cover. Easy to use, simple and clear. 2. In order to achieve better results, use distilled water or neutral detergent to wet the contact surface to be tested. 3. It can be used in a wide range, such as skin acidity, physical acidity, soil, breeding, sea water, etc. 4. Stable working performance and good working condition. Made of high‑quality plastic material, durable in use and has a long service life. 5. Accurate testing, efficient and fast. Small and portable, good helper in teasting work. Specification: Condition: 100% Brand NewItem Type: Pen‑Shaped Acidity Tester Material: PlasticWeight: Approx. 166g / 5.9ozProduct Size: Approx. 75 x 51 x 25mm / 3 x 2 x 1inTest Range: 0.00-14.00ph Resolution: 0.01PH Battery: 3 x 1.5V (AG-13 button battery) (Not Included) Battery Capacity: 3 x 160Amh Working Temperature: 0℃-50℃. Package List: 1 x Probe1 x PH Meter Electrode (Batteries Not Included)1 x Screwdriver1 x Manual Note: 1. Please allow 0‑2 cm 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.3. In the following cases, the ph meter needs to be recalibrated: it has been used for a long time after calibration, the battery is replaced, and the measurement accuracy is relatively high.