Garmin Fenix 6X is Garmin's first solar-powered GPS watch

Garmin has more smartwatches than you have had hot dinners but its latest offers a very cool USP - solar charging.

Part of a bevy of Garmin releases, the Garmin 6X Pro Solar comes packing Power Glass - this is a transparent solar charging lens that uses the sun’s energy to extend battery life.

Harnessing the sun means that you should get an extra three days' use out of the thing, which means that it will keep working on your wrist for a whopping 24 days.

The other smartwatches announced today by Garmin are the Fenix 6 and Fenix 6X multisport GPS watches.

These are rugged watched but have been made a little thinner than previous models. Display size has increased, too - from 1.3’’ and 1.4’’ respectively. In real money this is 17 and 36 percent bigger than previous Fenix models.

If you think you are going to be giving you smartwatch a hammering then there are Sapphire versions of all the watches, which add a little extra bit of durability.

And it's good news if you are a runner - there's a new PacePro feature that will help grade your pacing. You can also create race plans before you run and see how far ahead or behind your target you are - all from the watch face.

These watches are also packed with maps of 2,000 ski resorts and 41,000 golf courses.

The Fenix 6 series is available now with pricing starting at £529.99 - the Garmin Fenix 6X RRPs for £849. We'll hopefully be putting the new line-up to the best running watches test soon.