Welcome! I am unsure of the usage period or frequency. *Please confirm as items not listed are not included.* Included items: Main unit only Condition: Operation confirmed! Battery cover is missing. There are minor scratches etc. due to use. 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.* #Zoom #Recorder #HandyRecorder