Newest model for 10 eggs. I did squeeze 12 in there because I figured 10 would hatch. Brand new used once. Need a bigger hatcher. Temperature is steady and can be changed. Automatic turning or you can turn manually without removing the lid. An egg candler that works great. You can set the humidity, but I really can't vouch for it being automatic because my humidity was around 40% in my house so the humidity is not going to drop to 30% where I wanted it. I did have it up to 65% at lockdown where it was set. It counts days for different birds. You fill the water on the outside . $10.00 shipping.