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Model A1

DVR EM Digital Voice Recorders model A1, the first voice recorder from EM Digital Voice Recorders series with built-in rechargeable battery, records audio in the built-in flash memory for as long as up to 75 hours depending on compression rate and flash memory installed. The built-in rechargeable battery provides operation in record mode up to 25 hours.

Model B5

EM Digital Voice Recorder (DVR) is intended to record voice messages within frequency band 300-3400 Hz in flash memory. It can play back stored messages using an earphone or download the messages to a personal computer as standard sound files. DVR type S provides recording capability in "Stereo" mode on two channels simultaneously

Model B7

EM Digital Voice Recorder (DVR) is intended to record voice messages within frequency band 300-3400 Hz in flash memory. It can play back stored messages using an earphone or download the messages to a personal computer as standard sound files. DVR type S provides recording capability in "Stereo" mode on two channels simultaneously