The V-50 and the V-40 are Voice-Trek voice recorders from Olympus. Launching in October, these voice recorders are also MP3/WMA players and they support SRS Wow. Other features include: 4 built-in preset equalizers, repeat and random playback functions, and you can transfer recordings or MP3 files via the USB plug. Also the Voice-Trek while recording is 11 hours (stereo) / 15 hours (mono-aural). The external dimensions are 94.8 x 38.2 x 11mm, weighs only 46 grams and it's battery life for playback is 7 hours. Source [Matthew M]