Slick Hear Clear Portable Sound Amplifier 2-Pack, Amplifies distant and hard-to-hear sounds, up to 60 feet away, Volume control Can be useed indoors or outdoors, at concerts, lectures, theater, sporting events, during the observation of nature from a distance and more The versatile amplifier is compact enough to fit in your smallest pocket, yet powerful enough to pick up bird calls from 100 yards away Includes High quality ear buds Built in Belg clip And Batteries included What binoculars do to improve your vision, the Super Ear does to improve your ability to hear the sounds around you. Personal listensing and sound amplification Volume control