OLATHE, Kan.--(BUSINESS WIRE)--Garmin International Inc., a unit of Garmin Ltd. (NASDAQ:GRMN), today announced HRM-Tri and HRM-Swim, the company’s first underwater heart rate monitors. Featuring compact and comfortable designs for minimal drag through the water, triathletes and swimmers can take their training to the next level with HRM-Tri and HRM-Swim. Storing up to 20 hours of heart rate data during swims, both forward data on to a compatible Garmin device1 at the end of a session and send r