Features:Accurated measurement: High measurement accuracy, stable performance, and can quickly read the PH value for you.Portable: Small size, light weight, suitable for outdoor carrying, helpful for detecting pH values and values of different water sources.Sturdy: Wear-resistant, corrosion-resistant, Sturdy,chemical-free, easy to maintain.Versatile Testing: Capable of testing various parameters such as PH levels, chlorine levels, and temperature, providing comprehensive insights into water quality.As a gift: A practical tool, suitable for friends who like outdoor sports and swimming.Notice:*Actual color may be slightly different from the image due to different light effect*Please allow 1-3cm deviation due to manual measurementDescription:Material:absRecommended level for pool and spa is 1.2 to 1.7ppm for chlorine and 7.2 to 7.8 for pH.