American lagers tend to offer a much lighter body than other styles, very little (or no) bitterness, and lower ABV. Sometimes called "mass market" lagers, production focuses less on complex flavors, and more on reproducing pale, crushable consistency in every can or bottle.
When it comes to flavor, think...neutral, and not in a bad way. There's not too much of any flavor, with a balance of grain and corn flavors, with a low to medium-low hop bitterness. Craft beer drinkers will probably find the hop flavors to be subdued.
The alcohol by volume (ABV) of American lagers is usually in the 4% - 5% range.