Thursday marks the surprise reintroduction of the Apple Watch blood oxygen feature, redesigned for some Apple Watch Series 9, Series 10 and Apple Watch Ultra 2 owners. The feature will be available via a software update that's rolling out now.

Apple Watch Users Get a Major Upgrade That Could Transform Your Training Forever originally appeared on Men's Fitness. Apple Watch users are in for a serious upgrade. Apple is updating the Blood Oxygen feature for select Apple Watch models, giving fitness-minded users more ways to track their health.

Apple is re-enabling blood oxygen tracking on select watches in the US via the latest iOS and watchOS updates.

The Apple Watch Series 7 has been added to the Wowcher site, with prices starting at £155 - but there is a catch for those looking to take advantage of the offer