ULTRAHUMAN Ring Air 9 silver

The Ultrahuman Ring Air in silver is a compact smart ring that tracks your activity, recovery and sleep. After pairing it with a smartphone via Bluetooth and the Ultrahuman app, you get a detailed overview of your data. The ring measures heart rate, blood oxygen saturation (SpO2), sleep duration and body temperature. It is equipped with a 6-axis motion sensor, a non-contact temperature sensor and PPG sensors for cardiovascular data.

Weighing under 3 grams, with a smooth, hypoallergenic titanium shell, the ring is comfortable to wear during everyday activities, exercise and sleep. It is rated IP58 and is water-resistant to 100 metres. According to the manufacturer, a single charge lasts up to 6 days, and the included wireless charger keeps it powered up.