• You'll almost forget you're wearing Forerunner 255 with its sleek design and 1.7 oz weight – even when you're asleep.
• This watch is ready to wear — and tear — with robust Corning® Gorilla® Glass 3.
• With a battery life of up to 14 days in smartwatch mode and up to 30 hours in GPS mode, you can get an uninterrupted view of your health.
• Use the Forerunner 255 series' new triathlon and open-water swimming profiles to access 30 built-in activities. Transition to the next activity with a simple button push during races and brick workouts.
• View your training history and compare the intensity of your most recent exercises to the ideal range to help you improve your fitness.