Garmin Forerunner 630 vs Garmin Forerunner 935

On top of tracking the stats that most sports watches track, such as step count, burned calories and covered distance, the Forerunner also records a number of in-depth measurements, like heart-rate patterns, running cadence, VO2 max, and many others.

Even though this watch was first introduced in 2015, in many ways it still beats the vast majority of new and much more expensive watches: It's 10 to 20 grams lighter than most alternatives; The battery lasts for four whole weeks with the GPS turned off, when the majority of newer models last only for 5-10 days. In GPS mode, it lasts for 16 hours, outperforming most watches that hold a charge for 5-10 hours. And with both GPS and Glonass, the precision and reliability of tracking are great too. Best part of all, the Forerunner 630 comes around $200 cheaper than what you'd pay for a newer watch with comparable performance.

In idle mode, the battery will last for up to four weeks, when most GPS watches last at best 7-10 days. Of course, the actual battery life will depend largely on how you use the watch, but it's one of the best batteries available in a sports watch nevertheless.

The Forerunner has both GPS and Glonass services, so there's very little chance that it will lose your geolocation. There's also UltraTrack, a tracking mode with low energy consumption but less precision that can be helpful during a multiple-day hike.

Especially if you owned previous Garmin models, using this watch is very simple. All modes and apps can be accessed via the touchscreen. You can also access some functions, like turning the watch on and off and locking the screen with physical buttons on the sides.

Besides tracking various fitness indicators, you can use this watch to get call and text notifications from your phone and check the weather.

The screen is big enough for you to be able to easily follow paths and read notification and text messages. The image is very clear, even under direct sunlight.

Among many other types of sports, the Forerunner 935 lets you track running, biking, and swimming. Better yet, you can combine the whole triathlon training session under a single workout - you don't even have to press a button to get accurate data from each activity.

The Garmin Forerunner 935 will be a good option for a person who likes to try a lot of different activities, such as hiking, skiing, skydiving, rowing, and many more. It can track a vast number of in and outdoor activities and provide in-depth indicators that will help you adjust the intensity and timing of your workouts.

If you're training for a marathon or are planning to go on a multiple-day hike, this is one of the best sports watches to have. It can last for full 24 hours with GPS on, while the majority of alternatives available on the market provide less than a half of that time.