This is a Citizen receipt printer (model: CT-S251). The items for sale are: * Main unit * Power cable * USB connection cable, approximately 2m * Partially used roll paper (58mm width, approximately 37mm diameter) The interface is USB + Bluetooth (as shown in the 5th image). The memory switch settings have been initialized. There is no outer box or instruction manual. There are no noticeable scratches, stains, or damage on the main unit, but there are some minor scuff marks. I have confirmed that it is recognized by my PC (Windows 10) when connected via USB cable, and that it is recognized by a smartphone via Bluetooth. I have also confirmed that test printing and cutting operations work normally (as shown in the 6th image). I will carefully clean and package it with消毒用アルコール (disinfecting alcohol). Please consider purchasing if you are interested! Please also see my profile.