1. Material: ABS, electronic components 2. Application: salinity/PH/TDS/EC/ORP/SG/temperature detection 3. Waterproof grade: IP67 4. Built-in battery: LR44 x 3 (shipped without battery) 5. Using highly sensitive glass electrodes, the detection speed is fast and the precision is high 6. LCD high-definition display, easy to observe the test results 7. Dimensions: 18.3 x 3.7 cm