Masimo to Report Fourth Quarter and Fiscal Year 2007 Financial Results on February 26, 2008

February 19, 2008

Conference call and webcast with Masimo to begin at 2:00 pm PT (5:00 pm ET)

IRVINE, Calif., Feb. 19 /PRNewswire-FirstCall/ -- Masimo Corporation (Nasdaq: MASI), the inventor of Pulse CO-Oximetry and Measure-Through Motion and Low Perfusion pulse oximetry, today announced it will release fourth quarter and fiscal year 2007 financial results for the period ended December 29, 2007, after the market closes on Tuesday, February 26, 2008.

A conference call to review the results will begin at 2:00 p.m. PT (5:00 p.m. ET) and will be hosted by Joe E. Kiani, Chairman and Chief Executive Officer, and Mark P. de Raad, Executive Vice President & Chief Financial Officer.

A live web cast of the conference call will be available online from the investor relations page of the Company's corporate web site at http://www.masimo.com. The dial-in numbers are (800) 295-4740 for domestic callers and (617) 614-3925 for international callers. The reservation number for both dial-in numbers is 39491099. After the live web cast, the call will remain available on Masimo's web site through March 26, 2008. In addition, a telephonic replay of the call will be available until March 10, 2008. The replay dial-in numbers are (888) 286-8010 for domestic callers and (617) 801-6888 for international callers. Please use reservation code 89834871.

About Masimo

Masimo (Nasdaq: MASI) develops innovative monitoring technologies that significantly improve patient care-helping solve "unsolvable" problems. In 1995, the company debuted Measure-Through Motion and Low Perfusion pulse oximetry, known as Masimo SET, and with it virtually eliminated false alarms and increased pulse oximetry's ability to detect life-threatening events. More than 100 independent and objective studies demonstrate Masimo SET provides the most trustworthy SpO2 and pulse rate measurements even under the most difficult clinical conditions, including patient motion and low peripheral perfusion. In 2005, Masimo introduced Masimo Rainbow SET, a breakthrough noninvasive blood constituent monitoring platform that can measure many blood constituents that previously required invasive procedures. Rainbow SET continuously and noninvasively measures carboxyhemoglobin (SpCO(TM)) and methemoglobin (SpMet(TM)), pleth variability index (PVI(TM)), in addition to oxyhemoglobin (SpO2), perfusion index (PI) and pulse rate, allowing early detection and treatment of potentially life-threatening conditions. Founded in 1989, Masimo has the mission of "Improving Patient Outcomes and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications." Additional information about Masimo and its products may be found at http://www.masimo.com.

Masimo, SET, Signal Extraction Technology, Improving Outcomes and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, Rainbow, SpCO, SpMet, PVI and Pulse CO-Oximeter are trademarks or registered trademarks of Masimo Corporation.

SOURCE Masimo Corporation

CONTACT: Investors, Mark P. de Raad, Executive Vice President and Chief Financial Officer, +1-949-297-7080, mderaad@masimo.com, or Media, Dana Banks, Manager, Public Relations, +1-949-297-7348, dbanks@masimo.com, both of Masimo Corporation

Web site: http://www.masimo.com