The Silencer electronic ear buds provide all day comfort and customization with the patented secure fit system. Delivering crystal clear digital hearing enhancement. The silencer also protects hearing utilizing sound activated compression technology. Form meets function, all in a compact lightweight in-the-ear design. The Silencer Electronic Ear Plugs are offered in standard Black as well as Flat Dark Earth option – which is a MidwayUSA exclusive! NoteThe Silencer Ear Plugs are not rechargeable. Moreover, the Ear Plugs will use a low portion of battery power even when turned OFF. Also be sure to store ear buds in a low humidity environment. Battery draining faster in one ear over the other could be due to one directional sound causing one to work more than the other. The primary use for the silencer ear pieces is for suppressing loud sounds, not for carrying conversations as with using these as a hearing aid.