The LCD digital screen makes the display clear and the values easy to read. High-quality and professional workmanship makes the probe rustproof and free from magnetic interference. Its compact pen-shaped design makes it very portable without taking up space. The wide range of applications allows it to be used compatible water quality testing in a variety of occasions. Made of ABS and titanium alloy, it is very durable to use. The length of this product is 15cm and the width is 2cm. It can be used compatible water purifier testing, tap water testing, aquaculture testing, including plant breeding, aquaculture, etc. Item Name: Water Quality Test Pen Material: ABS,Titanium Alloy Accurate Value: ±2% Measurement Value: 0-9990m Battery: 2 x 5V Button Batteries (Included) Features: LCD Display, Long-lasting, Sensitive Size Details: Size: 15cm x 2cm/5.91" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Water Quality Test Pen