Multifunctional Digital 10 in 1 Water Quality Tester Portable High Accurancy Water Quality Test Pen PH/TDS/EC/Salinity/ORP/H2/S.G/Temperature/Nutrient Solution Concentration/㏁ Measurement (without backlight)

Features:
One button to switch function.
Whole machine waterproof.
Battary can be replaced easily.
Portable design for easy carrying and storage.
Quick and accurate test.
Large and clear screen to view the values.
Real-time display the remaining battery power.