Educational / How It Works

How Do Smart Rings Track Sleep? The Science Explained

How do smart rings track sleep so accurately overnight? We explain the sensors, sleep stages, and science behind it.

Our smart ring sizing guide for UK shoppers shows you how to measure your ring size at home in minutes and order with confidence.

Curious about blood oxygen SpO2 tracking on a smart ring? We explain how it works, what it can tell you, and whether you need it.

Confused by 5ATM vs IP68 waterproof smart watch ratings? We break down what each one really means, and which suits your lifestyle.

Wondering how accurate smart ring heart rate monitoring really is? We explain the tech, its limits, and how to get the best readings.