Tasco specialty 8x21 binoculars with amfm radioseries binoculars combines contemporary styling designs with traditional quality are durable and supplied with fully coated optics expect bright crisp clear viewing the 821rad is equipped with an incorporated amfm radio so that you can follow the action while simultaneously listening to the play by play of the big game bk7 prisms angled shielded rubber eye cups rubberised finish rubiconreg coated objective lenses requires 2 aaa batte