Mini digital voice recorders are mostly used as spy accessories or surveillance gadgets. Like any recorder, it can also record memos, seminars, lectures, and dictations. It can also store telephone conversations. Small units can be placed in the desk or inside the pocket. Some models can store from as low as 2 hours to a maximum of 20 to 30 hours worth of recording.

Manufacturers created and designed several mini recorders in several forms like pens, watches or key rings. Pens and watches function as recording devices while preserving their original functions (pen for writing, watches for giving time). Some models are extraordinarily small yet cover a wide frequency range. They have voice activation system which removes pauses during recordings. Other manufacturers also include LED indicators for monitoring with several color options. Some models are powered by lithium battery while some are solar-powered. Some recorders have metallic or wooden cases to disguise the recorder. Metal cases are designed to protect and avoid jamming.

Whether they are used as spy gadgets or for normal recording tasks, these mini recorders are built to create portable and easy to use units. Most of them are shockproof with no movable parts to ensure no jumping sounds.

Some features of mini digital voice recorders include

• Software with multiple language support

• Password protect for data storage

• Timer controls in recording

• Used as recorder and flash disc at the same time

• Built in microphone that is highly perceptive

• External microphone connectivity

• Push button operated

• Playback data using a transfer cable to a PC

• Pin number protected for advanced security

• MP3/ Wav audio formats

• Several recording modes to choose from

• One push recording capability

• Controlled by joystick

• Adapter connected

Some of the best mini digital disc recorders include:

- Ultra-thin Digital Voice Recorder

This recorder weighs 36g with a thickness of 6.5 millimeters. It is very thin yet powered with 1 Gigabyte of built-in memory. Aside from being a recorder, it is also used as MP3 player and USB flash drive. It is capable of recording 69 hours of WAV file audio. It has a microphone, built in speaker and headphone jack. It has pull out USB connector and swill out control buttons.

- Voice Recorder Pen

This recorder functions like the ordinary pen and at the same time a recorder. It is also used as data storage with MP3 playback. It records 64 hours of audio recording in 1 Gigabyte of built-in memory. Power comes from an internal USB rechargeable battery. Package accessories include a key chain attachment, earphones, pen refills, and pen software for old PCs.

- Wrist Watch Voice Recorder & Media Player

This recorder is a stylish watch equipped with 2 Gigabytes flash memory. It can record 180 hours of audio recording. It can be recharged thru a USB cable or an AC adapter/transformer. It has a separate battery power for its watch function. It has green, yellow and red light indicators. Package includes a wrist watch media player, and earphones.

- Deluxe Mini Digital Voice Recorder

It can record up to 60 seconds and is portable enough to be placed in pockets. It functions as a keychain with a built in LED flashlight. It has press buttons for record and play.