Featuring a slim design and an always-on, full-color display, this watch is light on the wrist and easy to read even in direct sunlight. It is available in 46 mm and 41 mm sizes. The Forerunner 255 offers up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode, providing comprehensive health insights from sleep to training. The morning report summarizes your sleep, HRV status, and daily workout suggestion in one place as soon as you wake up. (This device is intended to give an estimate of your activity and metrics.) Prepare for your next race with training tips, personalized daily suggested workouts, and completion time predictions based on course details, weather, and performance. View your entire week of daily suggested workouts, which adapt after every run to match your performance and recovery. HRV status tracks your heart rate variability while you sleep, offering greater insight into your overall wellness, recovery, and training performance. (This device is intended to give an estimate of your activity and metrics.) Access adaptive training plans for a 5K, 10K, and half-marathon, or create your own custom workouts in the companion smartphone app.
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First Listed on Newegg
June 10, 2026
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Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.