3. 9V battery compartment: light weight, low power consumption, saving, long battery life. 1. Large LCD screen: large digital display, the detection number is clearly read. 2. PH detecting probe: adopts high waterproof probe, can accurately record the measurement position, sensitive response. 4. A variety of scenarios can be used: suitable for water quality testing, such as drinking water testing, swimming pools, laboratories, aquaculture, sewage treatment, etc.. 5. Maintenance: Shake off the water after the test is completed, keep the motor clean, if not used for a long time, please take out the battery and cover the electrode protection cover for storage!, Weight: 1.50796187208 pounds, Manufacturer: Hipzeepo