alaTest has collected and analyzed 35 user reviews of Sony 4 GB Slim Noise-Canceling Video MP3 Player (Black) from Amazon.com. The average user rating for this product is 4.0/5, compared to an average user rating of 3.8/5 for other products in the same category on Amazon.com. Reviews about the size and battery are generally positive. The portability and sound are also appreciated, but some have doubts about the durability and price.