So we're thrilled. The Lumia incubator works very reliably and relatively quietly. The temperature and humidity are correct, we measured this with another high-quality thermo/hygrometer. Please do not be confused when measuring yourself; Depending on where a thermometer is located, for example at the bottom of the incubator, the temperature will vary slightly, but this is normal. The preset 37.7 degrees is correct and intended by the manufacturer, so don't worry! The Lumia 16 really works correctly! Of the original 10 eggs, 7 were fertilized and 7 chicks hatched in this incubator, so a 100% hatch rate! Craziness. We documented everything with photos and videos. We can really recommend him! Another piece of advice to everyone: Please stay away from the cheap Asian incubators, we speak from experience! Especially the ones where there are several white rollers inside that rotate and where the eggs are placed on or where small spray bottles are included. Just stay away from it. :( You're saving at the wrong end. It's better to spend a little more money and be happy about healthy chicks! :)