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features 

Up to 696 Minutes Recording Time

is available on the integrated

circuit chip which may be recorded over and used again

• USB Compatible for Fast Transfer Rate to a PC Includes Digital

Voice Editor Software

via USB port on a PC

• Choice of Stereo, SP and LP Recording Modes:

ST–85 Min, 

SP–250 Min, LP–696 Min

Digital Voice-Up Function

increases the volume of the person

speaking when recorded at a distance from the unit 

• Multi-Directional Micr Directional Microphone Mode

easily adjusts the direction of the microphone to improve the 
recording quality

• Compatible with Dragon Naturally Speaking™ Preferred Voice to

Print Software

to easily convert your recorded files into text

Overwrite Correction Function

allows the user to rewind to a location

and re-record the dictation

• High Quality Sound—“LPEC™ CODEC”

with improved frequency

response ensures excellent recorded sound clarity

• Advanced Digital VOR (Voice Operated Recording)

stops the

recording during silent pauses, saving valuable recording time, then
begins recording again without missing a single syllable thanks to the
digital buffer

• 5 File Folders

provide separate message areas for different applications

such as business memos or personal reminders, for better organization
and faster access

• Priority Function

automatically moves priority marked dictations to the

front of the list of recordings in the folder

• Voice E-Mail Function

using the supplied digital voice editor software

lets you easily send audible e-mail with an attached file 

• Slim Style Design

only one-half inch thick, with Record and Pause

controls located on the side of the unit for easy operation; fits neatly into
a shirt pocket 

• Easy to Use Playback/Edit Function

lets you begin playback with the

press of a button, then edit the recordings with equal ease

• Digital Pitch Control/Playback Speed Control

allows recordings to

be heard at slower than normal speeds without distortion to facilitate
transcribing or editing, or faster than normal to move quickly to a
desired portion

• Full Function LCD Display

shows number of messages recorded,

recording length, date, time, and battery power remaining

• One Button Play from Record

lets you switch from Recording mode

to Play mode with one finger

• Incremental Rewind (Easy Search)

is the equivalent of tape Fast

Rewind but without returning all the way to the beginning of each
recording, to help locate specific passages

• 32MB Built-In Flash Memory

uses high capacity IC chip, which 

may be recorded over itself and used again and again, with 
distortion-free clarity 

• Built-In Playback Speaker

for monitoring playback of recordings

• Record-Pause Function

temporarily stops recording to allow for

pauses in dictation or to provide time for reference to documents, then
resumes where recording was stopped, at the press of a button

• Add-Recording Function

allows you to insert and add additional

information to any message without affecting the original

• Battery Strength LCD

provides a visible signal of battery strength 

• Hold Switch

prevents accidental operation or changes to settings while

carrying the unit in pocket or briefcase

• A–B Repeat Function

enables a specific segment of the recording to

automatically play over and over again

• Hi/Lo Mic Sensitivity

enables the unit to record different situations,

from group meeting to individuals, more effectively

• Stereo Earphone and Microphone Jack

allows listening through

earphones for privacy or transcription and connection of an external
microphone for special applications

• LED Operation Indicators (Record/Play)

indicates Red when unit is

recording, Green when in playback mode

• Microsoft

®

Windows

®

98/2000/Me/XP Compatible

specifications

Recording Media:

Flash Memory Built-In 32MB

PC Connectivity with USB:

Speaker:

1

1

4

" (32mm) dia. 

Input/outputs:

USB Port, Earphone Jack, DC-in Jack, Microphone Jack 

Power Requirements:

DC 3V with “AAA” x 2 Battery

Battery Life(Approx.):

REC. ST/SP/LP 14 Hours 

Channel:

Mono/stereo

LED:

REC (Red), PLAY (Green)

Recording:

ST (41 Minutes), SP (4 Hours 10 min Minutes), LP (11 Hours 

36 Minutes)

Dimensions (WHD): 

1

5

8

" x 4" x 

1

2

" ( 41.5 x 103.6 x 12.8mm)

Weight: 

2

3

4

oz. (79g) with battery

Supplied Accessories: 

PC Download Software, “AAA” Battery x 2, Carrying

Case, Earphone MDR-ED228LP, USB Cable RK-G136

©2004 Sony Electronics Inc.

Reproduction in whole or in part without written permission is prohibited. All rights reserved. Sony and

LPEC are trademarks of Sony. Dragon Systems and Dragon Naturally Speaking are trademarks of

ScanSoft, Inc. Microsoft and Windows are trademarks or registered trademarks of Microsoft

Corporation in the United States and/or other countries.

Features and specifications are subject to change without notice. Non-metric weights and measures

are approximate.

ICD-ST25 

Digital Voice Recorder

®

Sony Electronics Inc.

1 Sony Drive
Park Ridge, New Jersey 07656
www.sony.com
Printed in USA 2/2004

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