The Fitbit Ionic doesn't quite deserve the term 'smartwatch'

Let me admit my bias right up front: I’m a nut about my Fitbit (FIT).

My little Fitbit Alta does an incredible job of turning invisible aspects of my health—sleep cycles, heart rate, activity levels, and so on—into motivating graphs and coaching. And Fitbit’s phone app provides even more inspiration by showing my wife’s, my father’s, and my friends’ data alongside my own. There’s nothing like health through humiliation.

But according to the sales figures, not everyone is so enthusiastic about fitness bands. Nike (NKE) discontinued its Fuelband in 2014. Jawbone Inc. shut down this year. Microsoft (MSFT) discontinued its fitness band in 2016. (“It’s a tough category,” Microsoft CEO Satya Nadella told me. “Brutal.”)

And Fitbit itself is struggling. Its stock is at roughly $6.50 a share—down about 85% from its 2015 peak. It laid off 110 people earlier this year.

The common wisdom is that smartwatches are what’s eating Fitbit’s lunch. A lot, therefore, is riding on the new Fitbit Ionic, Fitbit’s first actual smartwatch, which costs $300.

(Wait—wasn’t last year’s Fitbit Blaze supposed to be a smartwatch? Kind of, but the Ionic is far more developed. It has its own operating system and app store, plus GPS, water resistance down to 50 meters, swim tracking and lap counting, 2.5 gigabytes for storing music to play during your runs or workouts, and auto-recognition of 20 different exercises.)

The Ionic is a terrific fitness watch. And here’s the headline: five-day battery life. (Take that, Apple Watch and your puny one-day battery!)

But as a smartwatch, the Ionic is bizarrely weak.

Ionic fitness

The Ionic, to me, looks huge. It’s incredibly light, and fairly thin, so its size isn’t a practical problem—just a cosmetic one. It’s a vast aluminum square (in silver, gray, or orange), flanked by trapezoidal tabs.

Two buttons on the right, one (the Back button) on the left; navigation is easy. It’s waterproof, even for swimming and diving, and the two band halves are very easy to detach when you want to change straps, although the strap catalog is pretty small: your choice of plastic, perforated plastic, or leather. The colorful touch screen is super bright, even in direct sun—no problems there.

When it comes to tracking your health, the Ionic is a champ. It tallies your steps, calories, and distance; flights of stairs you’ve taken; minutes of exertion; continuous heart rate; and your stages of sleep, which is remarkably accurate and informative.

(You know how sometimes you can remember your dream, and sometimes you can’t? The Fitbit reveals why—it’s when a REM cycle slams right up against a wakeup moment.)