When choosing an MP4 player, you need to consider factors such as brand, quality, and price. The following are some of the factors that may affect the choice: 1. Brands: There are many different brands on the market, including Patriot, Samsung, Sony, and Philip. Choosing a well-known brand usually had better quality assurance and after-sales service. 2. Quality: The quality of the MP4 player directly affects the user experience. Choosing a product with stable quality can reduce the risk of malfunction and damage during use. 3. Price: The price of an MP4 player varies according to the brand, model, function, and other factors. Choosing a reasonably priced product could meet the demand and save some budget. Combining the above factors, the following brands and models could be considered: Patriot: Patriot is a well-known brand with stable quality and affordable MP4 players. There are many models to choose from. 2. Three Stars: Three Stars is also a well-known brand. Its MP4 player is of good quality and slightly higher price, but it has more functions. 3. Sony: Sony is a brand known for its music players. Its MP4 players have excellent sound quality and a higher price, but there are also some more affordable models to choose from. 4. Philip: Philip is a small household electrical appliances brand. Its MP4 players are relatively cheap, stable, and have a variety of functions. It should be noted that when choosing an MP4 player, not only should you pay attention to its brand and model, but you also need to consider whether its quality and function meet your needs. At the same time, in order to protect personal privacy, it is recommended to choose an MP4 player with good encryption and avoid downloading files from untrusted sources.