Timex Marathon GPS
Dustproof/water resistant at depth equal to or greater than 1 meter.
Resistance to sweat makes it ideal for use while doing sports.
The device has an electronic display to present information to the user.
These devices will not experience water damage, e.g. in the shower. Devices which can withstand more water pressure are better for swimming or diving.
GPS enables global positioning, useful in map, geo-tagging or navigation apps.
It tracks how far you travel.
Measuring pace shows how much time it takes to travel one kilometer or one mile. For example, in running, a 4 minute kilometer would be a very good pace.
Allows you to set your own goals, such as reaching 15,000 steps in a single day.
This is useful if you are on a strict training diet or if you are trying to lose weight. It can also help to boost your motivation.
There is less chance that you will run out of battery during an adventure.
Suunto Ambit3 Peak Sapphire (HR)
The battery can be recharged and used over again.
The device can wake you using vibration, so as not to disturb anyone else sleeping in the room.
With a stopwatch you can time yourself.
With a world timer you can easily see the time all over the globe. It is useful if you are travelling through different time zones.
Waypoints are locations or landmarks worth recording and storing in your GPS. These are locations you may later want to return to, for example favorite restaurants, bars etc.
Garmin Fenix 5S Sapphire