Specification: Built-in temperature control system. Contains a built-in fan to keep air circulated. Transparent lid allows observation of hatching process. Laboratory observation or or families incubating in the backyard. Can hatch seven eggs one time, but you need to determine whether a good eggs before. Suitable for: may hatch chickens, ducks, geese, parrots, pigeons and other poultries. Temperature setting can be used for different kinds of breeder eggs hatch. Note: When using, the customer needs to manually turn the eggs three times a day. Type: Eggs Incubator Power: 80W Frequency: 50HZ Voltage: AC 110V/AC 220V Temperature Control Range: 20℃ - 40℃ Number of Hatch: 7Pcs Plug type: US, EU, UK (Your Choice) Size: 17.5cm x 17.5cm x 16cm/6.89" x 6.89" x 6.30" (Approx.) Middle hole: height:1.5cm/0.59inch; diameter:3cm/1.18inch Press-Button Instruction: 1. "Set" ---- Temperature setting button. Press "Set" once, blue light comes out and you can do temperature settings, Press "+" or "-" to adjust temperature, press "Set" again to save data and exit. 2. "+"---- Press it to increase temperature. 3. "-"---- Press it to decrease temperature. Operation Instruction: 1. Plug it into AC220V, the red light comes out and the machine will be in operation mode (the heater inside starts to work). 2. Please add water when you start to use it. 3. Please prehest before the machine start to work, check it’s 38℃ or not, if not, pls set it to be 38℃ according to press-button instruction. 4. Please turn off the power after preheating. Fill the water pan with water, put it under the eggs tray and put eggs into eggs tray, then put on the lid of machine and turn on power. Notes: Eggs incubator ONLY, others not included. The eggs for hatching must be fertilized eggs. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.