Exhibit 15.1

FOR IMMEDIATE RELEASE

Editorial Contacts:

Joe Greenhalgh, Director, Investor Relations – USA (510) 713-4430

Ben Starkie, Public Relations Manager – Europe +41-(0) 21-863-5195

Nancy Morrison, Director, Corporate Communications – USA (510) 713-4948

Logitech Delivers Best-Ever Q1 Results

FREMONT, Calif., July 20, 2005 and ROMANEL-SUR-MORGES, Switzerland, July 21, 2005 — Logitech International (SWX: LOGN) (Nasdaq: LOGI) today announced its best-ever Q1 financial results and posted its twenty-seventh consecutive quarter of double-digit revenue growth.

Sales for the first quarter of Fiscal Year 2006, ended June 30, 2005, were $335 million, up 26 percent from $267 million for the same quarter one year ago. Operating income for Q1 was $25.2 million, up 17 percent from $21.6 million last year. Net income for the quarter was $22.4 million ($.23 per share), up 19 percent from $18.9 million ($.19 per share) in the prior year. Gross margin was 32.1, down from 34.1 percent in Q1 of FY 2005.

Retail sales were up by 27 percent, driven by growth in audio, console gaming and corded products. Logitech’s OEM sales were up by 17 percent from the same quarter last year.

“This great Q1, with double-digit sales growth in every region, led by the Americas, signals that Logitech’s FY 2006 is off to the right start,” said Guerrino De Luca, Logitech’s president and chief executive officer. “We are particularly pleased with the better-than-expected market response to our wide range of audio products, which we attribute to the growing popularity of both the MP3 music format and voice communications over the Internet. Even with a significantly higher proportion of audio products in the overall product mix, our gross margin remained in the targeted bracket of 32 to 34 percent, aided by healthy year-over-year improvement in gross margin for the audio category.”

Highlights for Logitech’s first fiscal quarter of 2006 include:

• Retail sales of Logitech’s audio products grew by 155 percent year over year, fueled by the increasing popularity of digital music in the home and on the go – which has created explosive demand for Logitech speakers and music headphones.

• Retail sales of the Company’s console gaming products grew by 84 percent, compared with Q1 of last year, due to increased demand for cordless gamepads, console wheels and Logitech’s new line of peripherals for the PSP^™ handheld entertainment system.

• Retail sales of Logitech’s corded products were up by 26 percent, largely due to the popularity of the Logitech MX518 gaming mouse.

• The Company successfully transitioned its manufacturing operations to its new manufacturing facility in Suzhou, China.

Outlook

Logitech confirmed its financial goals for the current fiscal year, ending March 31, 2006, of 15 percent year-over-year growth for both sales and operating income, with gross margin at the high end of the targeted range of 32 to 34 percent for the full year.

Earnings Teleconference

Logitech will hold an earnings teleconference on Thursday, July 21, 2005 at 14:00 Central European Summer Time/8:00 a.m. Eastern Daylight Time/5:00 a.m. Pacific Daylight Time to discuss these results as well as guidance for Fiscal Year 2006. A live webcast and replay of the teleconference, including presentation slides, will be available at www.logitech.com/investors. Please visit the Web site at least 10 minutes early to register for the teleconference webcast.

About Logitech

Founded in 1981, Logitech designs, manufactures and markets personal peripherals that enable people to effectively work, play, and communicate in the digital world. Logitech International is a Swiss public company traded on the SWX Swiss Exchange (LOGN) and in the U.S. on the Nasdaq National Market System (LOGI). The company has manufacturing facilities in Asia and offices in major cities in North America, Europe and Asia Pacific.

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This press release contains forward-looking statements regarding demand for audio products and expected sales, gross margin, and operating income for Fiscal 2006. These forward-looking statements involve risks and uncertainties that could cause Logitech’s actual performance to differ materially from that anticipated in these forward-looking statements. Factors that could cause actual results to differ materially include our ability to introduce successful products in a timely manner, the effect of pricing, product, marketing and other initiatives by our competitors and our reaction to them on our sales, gross margins and profitability, our ability to match production to demand and to coordinate the worldwide manufacturing and distribution of our products in a timely and cost-effective manner, the sales mix between our lower- and higher-margin products, our operations in China being adversely impacted by strains on Chinese energy, transportation, or other infrastructures, changes in consumer purchasing trends, and fluctuations in exchange rates, as well as those additional factors set forth in our periodic filings with the Securities and Exchange Commission, including its Form 20-F for the fiscal year ended March 31, 2005 available at www.sec.gov. Logitech does not undertake to update any forward-looking statements.

Logitech, the Logitech logo and other Logitech marks are owned by Logitech and may be registered. All other trademarks are the property of their respective owners. For more information about Logitech and its products, visit the Company’s Web site at www.logitech.com.

LOGITECH INTERNATIONAL S.A.

(In thousands, except per share / ADS) - Unaudited

	Quarter Ended June 30
CONSOLIDATED STATEMENTS OF INCOME	2005			2004
Net sales	$	334,702		$	266,594
Cost of goods sold		227,330			175,728
Gross profit		107,372			90,866
% of net sales		32.1	%		34.1	%
Operating expenses:
Marketing and selling		46,293			39,569
Research and development		21,018			16,679
General and administration		14,834			13,042
Total operating expenses		82,145			69,290
Operating income		25,227			21,576
Interest income (expense), net		585			(290	)
Other income, net		234			896
Income before income taxes		26,046			22,182
Provision for income taxes		3,649			3,327
Net income	$	22,397		$	18,855
Shares used to compute net income per share and ADS:
Basic		88,457			89,656
Diluted		98,906			100,590
Net income per share and ADS:
Basic	$	0.25		$	0.21
Diluted	$	0.23		$	0.19

Note:

Share and per-share data for all periods presented have been adjusted to give effect to the two-for-one stock split that took effect on June 30, 2005.

LOGITECH INTERNATIONAL S.A.

(In thousands) - Unaudited

CONSOLIDATED BALANCE SHEETS	June 30, 2005		March 31, 2005		June 30, 2004
Current assets
Cash and cash equivalents	$	298,785	$	341,277	$	273,976
Accounts receivable		204,867		229,234		150,926
Inventories		189,305		175,986		179,884
Other current assets		52,198		50,364		49,360
Total current assets		745,155		796,861		654,146
Investments		16,681		16,793		16,644
Property, plant and equipment		60,742		52,656		42,068
Intangible assets
Goodwill		133,950		134,286		131,778
Other intangible assets		14,656		15,816		20,744
Other assets		2,287		2,460		3,868
Total assets	$	973,471	$	1,018,872	$	869,248
Current liabilities
Short-term debt	$	147,268	$	9,875	$	9,898
Accounts payable		153,529		177,748		156,622
Accrued liabilities		144,427		156,575		118,910
Total current liabilities		445,224		344,198		285,430
Long-term debt		49		147,788		140,037
Other liabilities		685		737		910
Total liabilities		445,958		492,723		426,377
Shareholders’ equity		527,513		526,149		442,871
Total liabilities and shareholders’ equity	$	973,471	$	1,018,872	$	869,248

LOGITECH INTERNATIONAL S.A.

(In thousands) - Unaudited

	Quarter Ended June 30
SUPPLEMENTAL FINANCIAL INFORMATION	2005		2004
Depreciation	$	7,025	$	5,916
Amortization of other acquisition-related intangibles		1,160		1,396
Operating income		25,227		21,576
Operating income before depreciation and amortization		33,412		28,888
Capital expenditures		16,172		10,591
Net sales by channel:
Retail	$	284,312	$	223,471
OEM		50,390		43,123
Total net sales	$	334,702	$	266,594
Net sales by product family:
Retail - Cordless	$	75,305	$	76,680
Retail - Corded		72,269		57,569
Retail - Video		48,484		45,895
Retail - Audio		54,797		21,499
Retail - Gaming		20,589		16,249
Retail - Other		12,868		5,579
OEM		50,390		43,123
Total net sales	$	334,702	$	266,594