Welcome! I am unsure of the period of use or frequency. ※Items not listed are not included, so please check carefully※ Included items: Main unit, power cord Condition: Basic operations such as playback and recording have been confirmed! There are minor scratches, etc. We have cleaned and disinfected as much as possible. ※We are also listing on other sites, so please confirm with a comment! Also, this page will be deleted once a deal is made※ #Sony #CD #MD #Radio #Radio Cassette Player