The Whoop Strap 3.0 is a fitness tracker, but it’s not like most others on the market. It’s the third generation of Whoop straps – the first launched in 2015 – intended to bring you more data, more personalization and more useful coaching than a standard fitness tracker.

It’s designed to be completely unobtrusive and sits on your arm, where it collects data throughout the day. There’s no screen, buttons and nothing you can do with the band itself. Instead, the Whoop app shows you data – and there’s a lot of it. The device keeps track of your workouts, general exertion, as well as sleep and naps.

What sets Whoop apart from the competition is a focus on recovery. The aim is to make sure you feel well-rested, so you’re working at an optimal performance next time you workout – that way you’re more likely to avoid injury and over-exertion.

The performance was good, and syncing was simple. I did have a few problems connecting the strap and the app to begin with, but quickly solved them – there’s a messaging support function through the app if you have similar issues.

It’s hard to compare the Whoop to other trackers. It’s more like the Moov Now or the Oura smart ring than a smartwatch. For that reason, it won’t suit everyone. If you want notifications, a screen, and to see stats on your wrist while you work out, this isn’t for you. If you wish to have heaps of data, a straightforward band and a big focus on not only working out but getting rest, this could be your new favorite fitness tracker.