Get a clear picture of how you sleep, move and recover with this Leep smart ring, and you won't pay a monthly fee to see it. Wear it to bed and it tracks your sleep and overnight recovery, so you can spot what's helping or hurting your rest and start building habits that stick. During the day, an optical heart rate sensor monitors your heart rate and heart rate variability (HRV), while infrared light checks your blood oxygen levels. It also follows your stress, skin temperature and daily movement. Everything shows up in the Leep app, and it syncs with Apple Health and Google Fit. The titanium band is comfy enough to forget you're wearing it, and with up to 8 days of battery, you can go a week of workouts and early nights before it needs a top-up.

Please note, to get the most out of this product's features, you'll need to download the free Leep app, which is available on iOS and Android devices.