Finis SwiMP3.2G Waterproof MP3 Player New and improved wire connections for improved sound quality durability New and improved rubberized tethered cap for easy on and off secured cap Bone conduction audio transmission produces incredibly clear sound without headphones or ear buds Listen to music, audio books, podcasts and more with incredible sound quality while swimming 2G memory; stores over 500 songs; 32 hours of music For technical assistance on Finis Electronics, contact the Finis Support Team at 1-888-333-4647Note: Through diagnostics it was found that the hidden files in the memory of the MP3 causes this problem.When the processor finds the hidden file, it tries to play these incomplete files and the unit freezes up. Once the hidden files are deleted properly, the SwiMP3.2G returns to normal functionality.To properly delete files on a MAC operating system, not only does the user need to trash the files but also empty the trash bin.