We know they might not be a necessity for everyone, and some of you may never use them at all. But a few could come in handy depending on your lifestyle, while others are just plain cool to have on your wrist. And if you are in the military, or even law enforcement, this watch could become an essential piece of your gear. As is standard in most of Garmin's premium watches, you'll get everything you need to monitor your training progress no matter your sport or fitness level.

And don't forget the Garmin Forerunner 945 if fitness is your focus. It's easily our favourite running wearable, with an insane number of useful features and an excellent battery life.As we've mentioned throughout this review, the Garmin Fenix 6X Sapphire is almost the same watch as the Delta aside from its appearance – and price, of course. While it's certainly not cheap, you get great value for money, it's sure to last you a long time and it's cool as hell. But when it comes to those looking for a genuine tactical timepiece, the Delta can't be beaten. Whether you're in the military, law enforcement or something a little more secret, this watch needs to be part of your everyday kit. Garmin Tactix Delta review: Also consider The dual-position format lets you sync your location with others by seeing both the universal transverse mercator (UTM) and military grid reference system (MGRS) on the same screen. That comes in handy for anyone doing large-scale adventuring or mountaineering, as does the projected waypoint feature. Battery: Smartwatch - up to 21 days | GPS - up to 60 hours | GPS and Music - up to 15 hours | Max Battery GPS Mode - 120 hours | Expedition GPS Activity - 46 days | Battery Saver Watch Mode - 80 days

You won't get a touch screen with this watch, but in this journalist's opinion, that's no big loss. Five buttons control everything and can be customised to accommodate a range of shortcuts and menus.

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The Tactix Delta bears virtually all of the features as the Garmin Fenix 6X Sapphire, with the addition of the special tactical apps.

It's hard to find fault with the colour display, as Garmin really is leading the market when it comes to usability. This journalist is sold on the Tactix Delta. There's little more you could ask for in a watch; whether it's style, durability or functionality, the Delta has it all. Jumpster mode allows you to measure the altitude of a sky dive and navigate to a point of interest once you're in the air. This makes it perfect for anyone with an interest in airborne action sports, or even those who fancy trying sky diving and are interested in the nitty gritty stats. The night vision capability means you can switch the view on the watch, allowing it to be read by night vision googles. Probably one for the military, but it could also come in handy for those very serious paintballers out there.

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