300ml. Impressive marketing, with the unique bottle, label, and cloth on top of the cap. Label is a bit too "busy" for my tastes, and totally eschews the traditional labeling format used in Japan (not always a bad thing for foreign markets, but a bit much here).
Inside we find a very tasty JDG, light-bodied with notes of pear and melon. A bit expensive to drink on the regular (this 300ml was $20.99), but a delicious treat on occasion.