RCA Opal M4004 - digital player

alaTest has collected and analyzed 8 user reviews of RCA Opal M4004 - digital player from Amazon.com. The average user rating for this product is 1.0/5, compared to an average user rating of 3.8/5 for other products in the same category on Amazon.com. Reviewers are impressed by the sound. The battery is also appreciated, whereas some have doubts about the usability and design.