The Heritage rings are a geometric shape and are also discounted. Silver and black have £50 off, down to £249 from £299.

Their rings are stackable and comfortable, and they are available in men’s and women’s sizes. To redeem the Qalo military discount, look for the “military discount” link in their footer.

This is excellent news for anyone looking to pick up a cheap option among the best smart rings, especially right now, as it's on sale for Black Friday. Starting with the obvious style change ...