-Without batteries (as indicated in the description). -Came perfectly calibrated! Got all three powders and checked. -Within two weeks I did more than 30 measurements. Continues to work well and clearly.

PH came in a combined parcel, everything is fine, everything is whole, I did not use it yet in business, if everything is bad or some questions will be, I will add a review a

Very good for the price. It is necessary to buy 2 batteries LR54. the direction of the batteries is not indicated. But there are only two possibilities so we end up there.

Everything is wonderful! The parcel came very quickly! Everything corresponds to the description! The device is good. Immediately calibrated. Seller recommend!

Thanks! Good work! Everything corresponds to the description. Careful when stopping batteries. Lower into the water strictly vertically