Look My Similar Items. New Olympus DS-4000 Handheld Digital Voice Recorder Professional Dictation System Pro-Line Set. Features: Slide switch operation for ease of use and fast response, dual function cradle, docking station, for recharging of Ni-MH Rechargeable Battery Pack and for downloading data from the recorder to a PC, two Programmable buttons A and B, recording and storing voice in DSS format, two recording modes, SP (Standard Playback) mode or LP (Long Playback) mode, five folders and up to 199 files/folder, for a maximum of 995 recordings, built-in Variable Control Voice Actuator (VCVA) function, USB Audio Device, recorder can be used as a USB microphone or USB speaker when connected …..