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. The recorder is compatible with a wide range of special accessories such as difference external microphones, remote control units and optional USB adapter.

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. DVR type SM uses external flash-memory: SmartMedia cards, DVRs of remaining types - built-in flash memory.

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. DVR type SM uses external flash-memory: SmartMedia cards, DVRs of remaining types - built-in flash memory.

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. DVR type SM uses external flash-memory: SmartMedia cards, DVRs of remaining types - built-in flash memory.