This app is an "Instruction Manual" app for SC-55B only.Not only can you view the instruction manual, but you can also start the setting screen or application directly from the displayed page.Also, if you find the word you are looking for, you can search for "free words" in this manual and change the font size to a size that is easier to read.【Notes】Please check the following contents in advance and install it if you understand it.■ Since it is an application dedicated to SC-55B, it cannot be started on other models.■ Packet communication charges may be incurred for downloading and updating apps. For this reason, we strongly recommend using a Wi-Fi connection or a packet flat-rate service.