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EM Digital Voice Recorder - Model A21

Leather case Keychain Digital Voice Recorder. Can be charged from USB port

Miniature EM Digital Voice Recorder Tiny digital voice recorder (DVR) is intended for professional recording voice messages into flash memory.

 The DVR features an extremely small size and weight, long record time (up to 300 hours at the sample rate of 8 kHz, and 2 bit ADPCM compression), very low power consumption, wide frequency range (100- 10000Hz), wide dynamic range and a highly sensitive built-in microphone. 

A built-in real time clock and a calendar are provided, as well as the mode of start-up by timer. Due to the absence of moving parts, the DVR functions in a wide temperature range, under vibration and dusty conditions. 

This model of the Edic-mini Tiny series differs from other models in its being round, having a leather case and the ability to be charged from USB port. These features certainly give it a perfect disguise of a simple trinket. But really it's not. 

The DVR can be connected to PC via USB port with the supplied cable. The supplied software, working under Windows 2000/XP OS, allows.


Mini digital voice recorder A21  Keychain


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to save the recorded messages as standard sound files

  • to set the DVR parameters
  • to use the DVR as a flash-disc of 128-2048 MB, depending on a model, as well as to store and transfer files
  • there is an opportunity to update the DVR firmware using the software

Software features:

  • the DVR has a Voice Activating System (VAS) which effectively compresses pauses in messages, therefore increasing the actual record time. Using this system saves memory during pauses, but the time intervals remain. When downloading records to PC, the pause length can be either restored (as silence) or passed depending on the settings made.
  • the DVR working modes are indicated with the LED indicator
  • the DVR's Li-Pol battery can be charged right from USB port
  • the DVR can act as a flash-disc, which enables storing and transferring any data on it
  • the DVR can be used simultaneously for both recording messages and as a flash-disc, with the distribution of memory space for message recording and flash-disc being set by the user
  • the DVR makes it possible to record by both daily timer (time of recording start and stop is set) and once timer (date and time of recording start and stop is set)
  • to secure the data, a password may be set in the DVR, which prevents another user from unauthorized access to the DVR content and settings
  • every record made with the DVR is marked with the recording start time and date, and has a digital signature to define the DVR, which was used to make the record, and possible modification of the record file.
  • the DVR software provides a multilingual support
  • charging of the Li-Pol rechargeable battery from a USB port of a computer

Available Models:

  • EM Digital Voice Recorder Tiny A21-37h (2240)
  • EM Digital Voice Recorder Tiny A21-75h (4480)
  • EM Digital Voice Recorder Tiny A21-150h (8960)
  • EM Digital Voice Recorder Tiny A21-300h (17920)
  • EM Digital Voice Recorder Tiny A21-600h (35840)
  • EM Digital Voice Recorder Tiny A21-1200h (71680)


Main Specifications
Recording time 1120, 2240, 4480, 8960, 17920 min (The last digits show the maximum recording time in minutes at 8 K Hz sampling rate and 2 -bits ADPCM)
Low consumption current    
Power supply Li-Pol rechargeable battery with capacity -240 m Ah
Battery life (sampling rate 8 K Hz, without compression) - up to 120 hours
Battery life (VAS mode, audio signal below threshold) - up to 400 hours
USB 1.1 Interface  7-9 meters
Built-in microphone sensitivity  


Product Features
Case leather
Dimensions, mm diameter 55 mm, height 11 mm
Weight, grams 21g
Record time up to 1120/2240/4480/8960/17920 minutes
Battery life in record mode, hours up to 120 hours
Power supply Li-Pol battery which can be charged from USB port
Data transfer rate to PC up to 5.5 Mbit/s (USB 1.1)
In Box Voice recorder, USB cable, CD with drivers and programs, User manual, Wooden case



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Disclaimer: The customer is responsible for the knowledge of the laws that rule the use of these devices in his country.
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