are you ready for a game? here are the characteristics of a mystery item. can you guess what it is? it is something a lot of people use every day. in fact, many people, especially americans, say they cannot survive without one. people rub them on the outside with special liquids so that they stay bright. the inside is sometimes filled with music from a radio, a cassette player, or a cd player. some people even put telephones inside. they come in different colors, shapes, and sizes, but they all have two things in common. first, they have windows and four black round things on the bottom. second, they need people to control them.쪼금 길죠~?ㅠㅠ 여기서 가르키는 미스테리 아이템이 뭔지 알려주세요~~~~~~ 어디서 그 단서를 찾으셨나요~?