New Retro look withstainless steelmesh speaker grill, this little yellow speaker needs no battery just screw it on to your existing CDV-700 phone jack and enjoy the sweet audible clicks from your vintage GeigerCounter. It hasa pronouncedaudible clickusinga tuned speaker chamber to givemaximum audible output clicks. CNC Machined and painted to match the CDV-700. Designed and constructed by me in USA.Online future website coming soon…. You may return the Great Little Yellow Speaker for any reason if notsatisfied for a complete refund. What you will get…. 1- Great Little Yellow Speaker