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HOUSTON, March 3 /PRNewswire-FirstCall/ — Input/Output, Inc. (NYSE: IO)
announced today that it will release 2005 fourth quarter and year end results
on Wednesday, March 15, 2006 after the market closes. In conjunction with the
release, I/O has scheduled a conference call, which will be broadcast live
over the Internet, for Thursday, March 16, 2006 at 9:00 a.m. Eastern Time
(8:00 a.m. Central).

I/O had originally scheduled its earnings release for March 8, 2006, but
delays resulting from the process of completing the audit of I/O’s 2005
consolidated financial statements have caused I/O to reschedule the release of
its financial results for 2005. This delay is expected to also result in I/O
delaying the filing of its Annual Report on Form 10-K for the year ended
December 31, 2005. If delayed, I/O would expect to file its Form 10-K for
2005 no later than March 31, 2006.

In previous press releases, I/O management had anticipated 2005 earnings
to range between $0.12 and $0.25 per diluted share. I/O management continues
to anticipate that its reported earnings for 2005 will be consistent with its
previously-announced range.

     What:   I/O Fourth Quarter Earnings Conference Call
     When:   Thursday, March 16, 2006 - 9:00 a.m. Eastern Time
     How:    Live via phone -- By dialing (303) 205-0033 and asking for the
             I/O call at least 10 minutes prior to the start time.
             Live over the Internet -- by logging on to the web at the address
             below.
     Where:  http://www.i-o.com .  The webcast can be accessed from the home
             page.

For those who cannot listen to the live call, a telephonic replay will be
available through March 23, 2006, and may be accessed by calling
(303) 590-3000 using pass code 11055575. Also, an archive of the webcast will
be available shortly after the call on the company’s website at
http://www.i-o.com for approximately 12 months.

I/O is a leading, technology-focused seismic solutions provider. The
company provides cutting-edge seismic acquisition equipment, software, and
planning and seismic processing services to the global oil and gas industry.
I/O’s technologies are applied in both land and marine environments, in
traditional 2D and 3D surveys, and in rapidly growing areas like time-lapse
(4D) reservoir monitoring and full-wave imaging. Headquartered in Houston,
Texas, I/O has regional offices in Canada, Latin America, Europe, China,
Russia, Africa and the Middle East. Additional information is available at
http://www.i-o.com .

The information included herein contains certain forward-looking
statements within the meaning of Section 27A of the Securities Act of 1933 and
Section 21E of the Securities Exchange Act of 1934. These forward-looking
statements include statements concerning estimated earnings and earnings per
share for fiscal 2005, that are not of historical fact. Actual results may
vary materially from those described in these forward-looking statements. All
forward-looking statements reflect numerous assumptions and involve a number
of risks and uncertainties. These risks and uncertainties include the timing
and development of the Company’s products and services and market acceptance
of the Company’s new and revised product offerings; risks associated with
competitor’s product offerings and pricing pressures resulting therefrom; the
relatively small number of customers that the Company currently relies upon;
the fact that a significant portion of the Company’s revenues is derived from
foreign sales; the Company’s ability to successfully manage the integration of
its acquisitions into the Company’s operations; the risks that sources of
capital may not prove adequate; the Company’s inability to produce products to
preserve and increase market share; collection of receivables; and
technological and marketplace changes affecting the Company’s product line.
Additional risk factors, which could affect actual results, are disclosed by
the Company from time to time in its filings with the Securities and Exchange
Commission, including its Annual Report on Form 10-K for the year ended
December 31, 2004 and its Quarterly Report on Form 10-Q for the quarter ended
September 30, 2005.

CONTACTS: Robert P. Peebler
Chief Executive Officer
Input/Output (281) 879-3615

Jack Lascar, Partner
Karen Roan, SVP
DRG&E (713) 529-6600

SOURCE Input/Output, Inc.