This Manually egg incubator machine has a hatching capacity of 20 chickens, quail, or ducklings, about more than 85% of children being born. Chicken eggs take 21 days to hatch, duck eggs take 28 days, and quail eggs take 18 days. It's 12 x 8 x 4 inches in size and runs on 220V AC and 12V DC power.