This is anOlympus DS-40 Digital Voice Recorder. Manual can be downloaded from Olympus web site. In addition to recording and playing WMA files, with the DS range you can listen to MP3 and AA (Audible content) files.
This is an Olympus WS-210S Digital Voice Recorder Digital Voice Recorder. Professional-grade digital voice recorder. Voice Filter cuts out low and high frequency noise during playback. Convenient USB 2.0 direct design for fast data transfer.
This is an Olympus WS-311M Digital Voice Recorder. Mass storage device for data files - music, dictation, images & data. SRS WOW and Tru Bass. 6 recording qualities for voice files STXQ/STHQ/STSP/HQ/SP/LP.