About Logistics, this item ships from an international seller. Expected delivery is 10-15 daysDigital PH Meter Tester Mini Pocket Pen for Aquarium Pool Water Calibration Product Selling points: Fast and Accurate Readings: Just turn it on, dip in liquid and read display, no need to work with color charts or test strips;Large digital display makes it easy to read. Automatic Calibration: No need any adjustment screwdrivers, just finish the calibration with Auto calibration button and included buffer powders. Portable Design: Handheld pen style and compact carrying case makes it leisure fits in your pocket or bag and goes anywhere. Wide Application: Ideal for home and laboratory pH testing applications, including drinking water, swimming pools, aquariums, hydroponics etc. Power supply: 2 x1.5v AG13(keep using more than 500 hours) opreating temperature 0-80°C Comes with 2 LR44 batteries Specification: 100% Brand New and High Quality Color:YellowandBlack Measure Range: 0.00-14.00PH Resolution: 0.01ph Accuracy: +/- 0.05ph Size: 155x31x18mm Package Include: 1xPH Meter Tester

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