Kieran Alger

Updated The Garmin Forerunner 45 has more features than you might expect for the money, and they all work well.

The Casio Pro Trek Smart WSD-F20 is built for adventure and designed to make sure you never get lost, but it falls down in other areas.

The V800's successor, the Polar Vantage V is a powerful training tool for serious competitors.

The Polar Ignite is a remarkably accomplished general-purpose fitness watch.

Updated Now cheaper than ever, can the Garmin Forerunner 235 still keep up with the pack?

The Suunto 5 is a new fitness-focused GPS watch that doesn’t quite make the grade.

The Polar Vantage M packs a lot of features into a lightweight, affordable package.

The Garmin Fenix 5 Plus is an exceedingly adept multisport watch, but it's also very, very expensive.

The Suunto 9 can last for up to 120 hours and is packed full of features. If it weren't for some suspect software this would be a classic.

The Suunto 3 Fitness offers a guided approach to fitness at a budget price, but the lack of GPS really hurts.

The Lumo Run aims to improve your running technique, because good form equals a faster, more efficient runner.

LifeBEAM Vi is an exciting AI with some great features but a number of major problems.

The Polar M430 is a feature-packed running watch, but is it enough of an upgrade on the best-selling M400?

The Forerunner 225 is the first Garmin watch to incorporate Mio heart rate technology. It looks impressive – but is it accurate and easy to use?