But there are a few key differences. The Versa doesn't have GPS built in -- you'll have to use your phone if you want to track your running route. Also, in the US, the basic version of the Versa is missing NFC for Fitbit Pay. You'll have to shell out an extra $30 for the special edition to get that function.

These are the tradeoffs you'll have to accept for the $100 drop in price. If you think you'll want to run outside without bringing your phone, you should probably pick the Ionic.

In use

As for the Versa's actual performance -- again, there are no surprises here. The watch does a good job of noticing when I've started any activity, as long as I've been at it for about 10 minutes. I wore it to a boxing class, and the Versa accurately recognized, thanks to my elevated heart rate, that I worked out for about 45 minutes. If I wanted to capture more information from that session, like calories burned and cardio performance, I could also launch Workout mode from the watch's Exercise app. Otherwise, it just logs those 45 minutes as "active time."

When I went out for a run, it took the Versa about 10 seconds to connect to my phone so I could use the GPS. On the Ionic, you won't have to wait as long before you can start running, but it still needs a moment to find your location.

One of the main differences between the Versa and the Ionic is the updated operating system. The Versa will ship with Fitbit OS 2.0, which the Ionic will get later this year. The new software places a dashboard under the Home screen, so you can see your day's stats just by swiping up. To do that on the Ionic you had to swipe to the left to pull up your apps, then launch the Today app. OS 2.0 just reduces the steps to one. This actually encouraged me to check my daily progress more often, and motivated me to stay on target.

Notifications also got an overhaul. You can swipe down from the home screen or long press the top right physical button to pull down a list of your notifications. When an alert comes in, it peeks down from the top, and you can flick it away. But if you're paired to an Android, you'll be able to reply to messages from your wrist with one of five customizable templates. Too bad quick replies isn't live yet and won't roll out until May.

Another feature that won't arrive till May is "female health tracking" -- as in, tracking your menstrual cycle so you can look out for symptoms or when you're ovulating. You can already download apps on your phone that do this, but it'll be nice to see this on your wrist and integrated with the rest of the information Fitbit already has.

In addition to the built-in fitness-tracking features, you can also make the Versa more useful by installing third-party apps. Since the Ionic launched, Fitbit has grown its app store, although it's not clear how many of these have been tweaked to fit the Versa's wider face. You'll find nifty options like Yelp, Nest, Philips Hue for smart light control and The New York Times for news updates. I particularly enjoyed playing 2048, even on the Versa's teeny screen.

I also appreciate the Versa's relatively long battery life. Fitbit promises you'll get "four-plus" days out of it, and indeed the watch conked out after close to five days of use, during which I tracked at least two workouts and four nights of sleep. The Ionic lasts slightly longer, but the difference is not significant.

Competition

For the price, the Versa's primary competition are the Samsung Gear Fit 2 Pro and the Apple Watch Series 1 (which costs $250). While both offer similarly robust fitness-tracking tools, the Versa has the edge on battery life -- it's the longest-lasting of the lot.

Those who must have built-in GPS should consider the Gear Fit 2 Pro. It looks nothing like a watch, but has almost all the features the Versa does with a bigger, brilliant display. You can play Spotify tracks offline, monitor your swims and map your runs phone-free. We haven't reviewed it yet, so we can't vouch for the battery life, but Samsung promises it will last three to four days.

Owners of iPhones may prefer an Apple Watch, although the Series is getting old. It lags behind the Fitbit in battery life and probably won't be available for that much longer. If you're after an Apple Watch and its superior compatibility with iOS, you're better off shelling out the $80 extra it'll cost to get a Series 3 model with GPS.

Wrap-up