Flights to Japan aren't short. If the idea of flying across the Pacific Ocean in a standard economy seat sounds unbearable, the good news is that you've got options. Japan-based All Nippon Airways — better known by its abbreviation ANA — offers up to four classes of service on its flights between the U.S. and Japan. For those on a budget, the most affordable upgrade option is ANA premium economy.

Here's what you need to know about ANA premium economy, its unique perks (like lounge access) and whether ANA premium economy is worth it.

ANA premium economy seats

(Photo courtesy of All Nippon Airways)

ANA premium economy seat designs and details vary by aircraft type. However, you can generally expect to get a larger seat with extra legroom and an in-flight entertainment system to help you pass the long hours in the sky.

(Photo courtesy of All Nippon Airways)

All ANA premium economy seats are arranged with 38 inches of pitch. That's 4 to 8 inches more than you'll find in most long-haul economy seats. ANA premium economy seats measure 19.3 inches wide, and all seats offer a universal power outlet, USB charging outlet, personal reading light and extendable leg rest.

(Photo courtesy of All Nippon Airways)

The newest ANA premium economy seats are found on ANA's Boeing 787-10, Airbus A380 and select Boeing 777-300ER aircraft. The main advantage of these seats is the large personal in-flight entertainment screen, which measures 15.6 inches diagonally. ANA boasts that it's the "largest available [screen] in any premium economy cabin worldwide."

Other ANA premium economy seats found on Boeing 787-8, 787-9 and other 777-300ER aircraft offer an approximately 11-inch monitor. The only advantage of these older seats is that you'll get a footrest starting in the second row.

(Photo courtesy of All Nippon Airways)

ANA premium economy is arranged in rows of either 2-3-2 or 2-4-2 seating. That means cabins have two seats on the window side of each aisle and either three or four seats in the middle. Most ANA aircraft have just two or three rows of premium economy.