Renpho LYNX Smart Ring

Monitor your essential health statistics

- Hollin Jones

> £219.99 > FROM renpho.uk > FEATURES Heart rate and blood oxygen monitoring, step counter, sleep tracking, stress monitoring; up to 7 days' battery life (14 days with USB charging case); Apple Health integration; waterproof to 5 ATM

While the Apple Watch has an impressive array of health tracking features, smart rings are an alternative way to measure all kinds of metrics. Since they are smaller and focus on just a few things they can be more affordable, with Renpho's LYNX costing £219.99. Available in Titanium Silver or Carbon Black, it requires you to first use the company's free sizing kit to determine which one you will need, after which you can order the correct size.