GORILLADRIVE EP Memory GorillaTones 4GB MP3 Player Large function buttons for active use - Supported Music Formats: MP3, WAV, WMA Holds approximately 1000 Songs** & Up to 6 Hours Music Playback*** Included: MP3 Player, Sport Headphones, Adjustable Armband, USB 2.0 Cable, Quick Start Guide PC OS Requirements: Windows 8 / 7 / Vista / XP (SP3 or higher); Mac OS X // PC Port Requirements: USB port 2.0 / 3.0 Ninety (90) Day Warranty: The following EP Holdings, Inc.products are covered by this warranty for a period of ninety (90) days from the date of original purchase: GorillaTones MP3 Player.