Garmin Forerunner 620 Overview

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Garmin Forerunner 620  was announced along with the 220 variant, adding the company’s already numerous range of running watches.

Both devices look very similar to each other, but the 620 is blessed with more features to measure VO2 max, vertical oscillation, cadence (number of steps per minute), and more.

In order to use most training features in 620, you need to use HRM-Run, which can be purchased separately or as bundled accessory.


As previously mentioned, for the Forerunner 620 to work to its full potential, you need to use HRM-Run during running activity. This allows the running watch to measure many affecting factors that can improve your fitness.

One of the most noticeable features is its ability to measure VO2 max. It is a calculation of maximum volume of oxygen you can consume per minute per kilogram of your body weight. Based on this calculation, the running watch will be able to predict the longest run you can make.

Forerunner 620 even measures the vertical oscillation or the degree of bouncing during running activity. A fixed point of your body is measured from the sensor equipped in the HRM-Run. Another good thing is that the running watch measures your cadence. In a running activity, cadence is the number of steps per minute.

The wristwatch also estimates the ideal recovery time that you need based on the data collected from the previous run. The estimation result varies depending on individual’s workout intensity and fitness condition.

Other features

Similar to most running watches from Garmin, Forerunner 620 records running data and uses it for your future preference. Pace alerts are also available, meaning you can pre-configure a desired pace before running, and the device will prompt you if you are behind or ahead of the intended pace. The built-in accelerometer can measure distance, speed, and cadence even when GPS service and HRM are not available.


The design of Forerunner 620 is very similar to that of Forerunner 220. The overall dimension of 620 measures at 1.8-inch W x 1.8-inch H x 0.5-inch D; it weighs 1.5 oz. The touchscreen size is 1-inch (diameter) delivering 180 x 180 pixels resolution. The running watch is powered by a rechargeable lithium-ion battery providing 6 weeks of power (watch mode) or 10 hours for running mode.

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