KKmoon Pen-Type ORP Meter with Backlit Display Portable Oxidation Reduction Potential Industry and Experiment Analyzer Redox Meter Measure Household Drinking Water Quality Analysis Device
The pen ORP meter is professional and ideal tool for testing your water level. Suitable for aquarium pool and environment water.
Features:
Use to measure the amount of Oxidation Reduction Potential (ORP) level.
The tendency of the solution to either gain or lose electrons.
Clear LCD with backlight.
Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems.
Mini small size, easy to carry with.
Compact and portable pen-type design.
Easy to use and provides instant display of results.
Specifications:
Range: -1999mV ～ 1999mV
Resolution: 1mV
Accuracy: ±5mV 
Operating Temperature:  0℃ ～ 50℃ (32°F ～ 122°F)
Battery: 2 × 3V（CR1632) Button Cell Battery (not included)
Color: Yellow
Material: ABS
Item Size: 14.8 * 2.6 * 1.4cm / 5.8 * 1.0 * 0.6in
Item Weight: 37.4g / 1.3oz
Package Size: 17.8 * 7 * 3cm / 7 * 2.8 * 1.2in
Package Weight: 94g / 3.3oz
Package List:
1 * ORP Meter (Battery is not included.)
1 * User Manual
1 * Mini Screwdriver