First fell to less than 2 days of stainless steel probe made of plastic housing and dangled just "around the 2 cables So I thought, what the heck -. For 10 euros I will send not return the part and have the probe with 2-component epoxy resin glued. Since it seemed reliably indicate the temperature of baby bottle. It was a day at least 5 times in operation. Now, after 7 months, the thermometer shows when you turn at room temperature already 28 degrees, although the room was only 22 degrees. The displayed 37 degrees in babies bottle are therefore always very cold. A battery change was unsuccessful. Therefore, I recommend not know about this product.