Farm Innovators Digital Still Air Incubator 40 WattsDigital display shows temperature, humidity, and days to hatch E Z Fill Water Channels let you add water without removing the lid IncutekTM heater heats to factory pre set of 100 F within minutes Days to hatch countdown is set at 21 days. Adjustable for a variety of eggs Hi Lo temp notification light flashes when outside of range(<97 F or >103 F) Large picture window provides 360 unobstructed view inside incubator. Great for educational observation