Please se the FAQ if you are having trouble with an empty battery.
Monochrome mode for DH2 is not mentioned in the manual. For an explanation of how to access Monochrome mode (in Japanese), please look here. As of DH2++, this mode has been included in the menu.
Normal Digital Harinezumi (not box set) does not come packaged with an SD card.
Digital Harinezumi may be subject to upgrade without warning.