MP3 players offer a few distinct advantages over other portable music players. They are much smaller than both cassette and portable CD players, and in many ways they are more versatile. One of the major reasons why many choose an MP3 player over one of the other styles of portable music players is because there are some great sport MP3 players available. A few of the major MP3 player companies offer a "sport"-model MP3 player in their lineups. While the moniker "sport" can refer to external features such as beefed-up, water-resistant housings, most often sport models are distinguished by their size. A good sport MP3 player is usually small enough to be easily clipped onto a belt or armband, and light enough to be virtually unnoticeable during a workout. When you say "sport MP3 player," you are most likely talking about a flash-style MP3 player. Flash-style players are distinguished from hard drive MP3 players in that they have no physically moving internal components. Not having a hard drive frees up a lot of space, and consequently, flash MP3 players can be quite a bit smaller than their hard drive cousins. Additionally, flash players generally have longer battery lives. This is a great boon to a sport model that's likely to get used several times a week for half-hour to hour-long periods. Perhaps the best feature of flash MP3 players, and one of the major reasons why they make such good sport models, is their ability to withstand shocks. Unlike players that have a hard drive, flash players will not "skip" when jostled around.
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