Accessories are great additions to men's attire. Whatever the occasion, your outfit can be spiced up by wearing accessories. There's an accessory appropriate for each occasion. Wearing them let's you customize and personalize your attire. Your choice of accessories, the design and color, greatly tells something about you - your fashion style, preference, and personality. Compared to the ladies, men only have fewer accessories at hand. The top 3 accessories for men probably are the belt, necktie, and cufflinks.
Belts are one of the most worn accessories of men. You can wear it at almost any occasion there is - be it formal or casual. You can wear it anywhere actually - at the office, at the mall, at a party, etc. Men should have at least one of 2 kinds of belt: a dress belt for formal wear and jeans belt for casual wear. One of each kind is enough because they're not very loud or anything (they are purposely made that way). Notice that belt designs (the shape, of course) are almost always uniform, made with leather or synthetic leather, and are generally classic black or dark brown.
While they look quite the same at first glance, one should know well their difference so as to not to be interchangeably worn. Generally, the casual jeans belt is bigger than the formal dress belt. The dress belt for formal wear is narrower by the width and comes with a small buckle of course. As the color, the belt should go well with the color of your shoes. Black belt matches black shoes. Likewise, if you're wearing brown shoes, wear brown belt also. Dress belts are usually black simply because formal events are usually black-themed, too.