Philips KEY006 128MB MP3/WMA Player/Thumb Drive with Neck Strap Remote Tiny, wearable 128 MB digital audio player Stores 2 hours of MP3, 4 hours of WMA Doubles as USB flash drive for storing and transferring files Plugs into any USB port, with no need for extra cables, drivers, or any other additional software Internal NiMH battery for 6.5 hours of life; external battery pack with 1 AAA battery for 10 hours