The Garmin Forerunner 965 is a premium GPS running triathlon smartwatch designed for both indoor and outdoor use. With a high-resolution display of 454 x 454, it provides accurate measurements in decimal and imperial systems. This smartwatch is compatible with iOS and Android operating systems, features GPS and compass sensors, and has a battery life of up to 14 days. It is lightweight at 52g, making it a reliable choice for runners and triathletes looking to track their performance and heart rate accurately.