The fully charged Nintendo 3DS will last you about four hours when you're playing a game, but the imminent 3DS Circle Pad Pro will keep going for an impressive 480 hours from a single AAA battery.

The battery life info comes from the manual for the Circle Pad Pro after someone got hold of the add-on ahead of its December 10 launch in Japan.

European gamers must wait until the release of Resident Evil: Revelations on January 27. The game will be available in a Circle Pad Pro bundle, or gamers will be able to pick up the accessory separately.

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Via Andriasang

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