If you want to store multiple types of wine in the wine fridge, you need at least 2 temperature zones. You have to store red wine at a different temperature than white wine. The amount of zones of the wine fridge isn't the same as the number of adjustable temperature zones. A wine fridge can have 4 zones, of which the upper and bottom ones are adjustable and the middle 2 aren't. The temperature of the middle zones depends on the set temperature of the bottom and upper temperature zones.