Garmin Forerunner 255 46 mm GPS Smartwatch, Tidal Blue

Run at a Higher Level. Every Single Day.

The Garmin Forerunner 255 Tidal Blue is the GPS running smartwatch that gives you advanced training insights, health monitoring and a reliable multi-sport platform in a lightweight comfortable design built for daily wear and daily performance.

Morning Report and HRV Status

Receive an overview of your sleep, recovery and training outlook as soon as you wake up, alongside HRV status and weather. The morning report consolidates everything you need to plan your day all in one place the moment you open your eyes.

Personalized Daily Suggested Workouts

Get workouts made for you that adapt after every session to match your performance, recovery and upcoming races in your Garmin Connect calendar. No more guessing what to do.

Advanced Training Metrics

Track your VO2 max, training load, training status, race predictor and performance condition to build a complete picture of your fitness over time with insights developed by Firstbeat Analytics.

30 Plus Activity Profiles and Health Monitoring

Tap into 30 plus built-in activities including triathlon, open-water swimming, strength training, HIIT, yoga and Pilates. Continuous wrist-based heart rate, Pulse Ox, stress monitoring, sleep tracking and respiration rate give you comprehensive health coverage day and night.

Battery Life and Water Resistance

Get up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode. Rated to 5 ATM water resistance.

Key Specifications at a Glance

Case Size: 46mm

Display: 1.3 inch MIP 260x260px

Lens: Corning Gorilla Glass 3

Weight: 49g

Battery (Smartwatch): Up to 14 Days

Battery (GPS Mode): Up to 30 Hours

Water Resistance: 5 ATM 50m

Color: Tidal Blue