ImusaGAU-80340 Description 34oz Electric Citrus Juicer, Plastic, 34 Ounces, White

Q: How many oranges full the cup?

Maybe 8-10 oranges to fill container

Q: Is it compatible with 220 Volt ?

I lived in USA and uses 120v and it works here not sure if 220 is compatible .

Q: Is this product dishwasher safe?

Good morning, no I do not believe you can put the juicer in it in the dishwasher for cleaning. The cleaning instructions I found online say wash with soap and water. I could not find anything that says the product is dishwasher safe. My inventory is currently in Amazon‘s warehouse so I can’t look at the product directly. Hope this helps have a great day.