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Olympus America Inc. > 
Item#: N82E16873100012

OLYMPUS WS-331M USB direct, 2.0 full speed PC Interface Digital Voice Recorder

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  • 2GB Recording Media
  • USB direct, 2.0 full speed PC Interface
  • 3.73" x 1.52" x 0.43" excluding protrusions

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Record for over 23 days with the WS-331M digital voice recorder from Olympus. In LP mode it can hold 555 hours and 45 minutes of recordings in its 2GB of memory. In extra high quality (Stereo XQ) mode you can record up to 35 hours and 30 minutes for when you want to catch every nuance of the conversation. When you’re done, just plug it into your PC’s USB port and transfer the files over.

The WS-331M supports playback of music files in MP3 and WMA formats. A built in equalizer and WOW XT sound enhancement let you customize your listening experience. The Advanced file management lets you record up to 200 files in each of the 5 folders. Index marks and temp marks allow you to quickly find desired locations. The large backlight LCD screen makes managing your recordings easy and convenient.

  • newegg Extended Recording Time The Olympus WS-331M features built-in 2GB flash memory for extended recording time of up to 35.5 hours in Stereo XQ mode or 555.75 hours in LP mode.
  • newegg Built-in MP3 Player The built-in MP3 player supports MP3 and WMA audio files and employs WOW XT technology to deliver rich bass and 3D stereo sound for a great listening experience.
  • newegg Super High Quality Recording The Olympus WS-331M features a low cut filter to block out unwanted background noise for super high quality audio recording.
  • newegg Large LCD Screen The Olympus WS-331M features a large, full-dot LCD screen with backlit for clear and quick viewing of recording times, battery life status and more.
  • newegg USB Direct Design With the “USB Direct” design, plug the Olympus WS-331M to your PC or Mac without cumbersome wires.

Learn more about the Olympus America Inc. WS-331M




Recording Format
Recording Media
Recording Time
Stereo XQ Mode: 35 hours, 30 minutes

Stereo HQ Mode: 71 hours, 00 minutes

Stereo SP Mode: 142hours, 05 minutes

HQ Mode: 142 hours 05 minutes

SP Mode: 279 hours 35 minutes

LP Mode: 555 hours 45 minutes
PC Interface
USB direct, 2.0 full speed
Built-in 18mm round dynamic speaker
1x AAA-size battery
Battery Life
Approx. 21 hours (using alkaline dry cell battery)
Input Level: -70dbv



Folders Messages: 5/200 per folder

Voice Activation: Available, Switchable On/Off

Practical Maximum Output: 70 mW

Microphone Jack

Earphone Jack

Sampling Frequency

Stereo XQ: 44.1kHz

Stereo HQ: 44.1kHz

Stereo SP: 44.1kHz

HQ: 44.1kHz

SP: 22.0kHz

LP: 8.0kHz

Overall Frequency Response

Stereo XQ: 50-19,000Hz

Stereo HQ: 50-15,000Hz

Stereo SP: 50-9,000Hz

HQ: 50-13,000Hz

SP: 100-7,000Hz

LP: 100-3,000Hz

Dimensions & Weight

3.73" x 1.52" x 0.43" excluding protrusions
1.7 oz. including battery
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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