Diamond Bakery will present Samuel M. Kamakau School with a heart defibrillator tomorrow, along with lessons on how to save someone suffering cardiac arrest as part of the bakery's annual "Have a Heart — Save a Heart" campaign.

First-quarter sales of the bakery's low-sodium crackers funded the campaign. The company also will donate $2,500 to the American Heart Association of Hawai'i for education and research.

Brent Kunimoto, Diamond Bakery's president, will make the presentation at the Hawaiian immersion school at 12:30 p.m.

The defibrillator enables rescuers to check a victim's heart rhythm and will provide voice prompts, lights and text messages on what steps to take to revitalize a cardiac arrest victim.

According to the American Heart Association, more than 3,000 people in Hawai'i die each year from cardiovascular disease.