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The Forerunner 255 is Garmin's mid-range GPS running watch, built for training rather than all-day smartwatch duty. It tracks runs, heart rate, sleep and daily steps, holds multi-band GPS for accurate pace in cities and trees, and runs about two weeks between charges in smartwatch mode. Runners pick it over the cheaper Forerunner 55 for its training load and recovery metrics, and over the pricier 265 for its battery life and always-on display. Owners rate the GPS accuracy and battery highly; the main complaints are the dim screen and the plastic feel.
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Runners and reviewers rate the Forerunner 255 as one of the best value GPS running watches, praising its accurate multi-band GPS, long battery life and deep training metrics. The most common complaints are the dull display and the plasticky feel of the case.
The Garmin Forerunner 255 is a 46mm sports smartwatch with a 1.3-inch round AMOLED display at 260x260 resolution. It has built-in GPS and a compass. It tracks heart rate, steps, calories and sleep.
It connects to Android and iOS phones over Bluetooth 5.0. It shows message and call reminders and can push messages to the screen. It also offers a calculator, speed measurement and a second time zone (GMT).
The case is carbon fibre and the watch fastens with a pin buckle. It is rated to 50 m of water resistance and has a battery life of 14 days.
