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HOUSTON, Jan. 16 /PRNewswire-FirstCall/ — Input/Output, Inc. (NYSE: IO)
announced today that it will host a real-time webcast of its fourth quarter
earnings release conference call. This webcast is scheduled for
January 28, 2003 at 9:00 am Central Standard Time. The earnings release is
scheduled to be issued the same day before the market opens.

This live broadcast of the I/O quarterly earnings release conference call
will be available on-line at or at .
Listeners should go to the web site at least 15 minutes before the broadcast
to register, download and install any necessary audio software. In addition,
the webcast will be available for replay for one week after the original call.

To listen to the conference call via telephone, please contact Elisa Smith
at (281) 879-3593 for the dial-in number. There will also be a telephonic
replay of the conference call for one week after the original call. The phone
number for the replay is (888) 562-0528 or toll (402) 998-1423.

Input/Output, Inc. is an industry leader in seismic acquisition imaging
technologies that operate on land, in marine and transition zone environments,
on the sea bottom and in wellbores. The Company’s products encompass the life
of oil and gas fields, from exploration and discovery through field
abandonment. Use of Input/Output technology enables the acquisition of better
seismic images at reduced cost and with a focus on reduced environmental
impact. Additional information on Input/Output, Inc. is available on the
internet at or contact us at .
SOURCE Input/Output, Inc.

CONTACT: Elisa Smith, Marketing Communications of Input-Output, Inc.,
+1-281-879-3593, or

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