This pen-shaped digital pH meter is the ideal tool for measuring pH in aquariums, swimming pools, school laboratories, food and beverages, and more. Product Details: Weight: 52 grams Resolution: 0.01 pH Accuracy: ±0.01 pH Size: 153x29x16mm Power supply: 2 pillow buttons 1.5 V. Operating temperature: 0 - 60 ° C Features: easy to use, reliable, stable and easy to carry; This meter is ideal for home use as well as in the field. The pH meter is equipped with a highly sensitive, fast and accurate. Packing List: 1 x Digital pH Meter 1 x Plastic Box 1 x QR Code Booklet 3 x Calibration Solution