Apple is now allowing owners of the iPhone 4 and 4S to upgrade to the new Apple Watch.
The software update was first spotted by user “sadface”, who posted the screenshot below.
Apple Watch 4 owners will also be able to update to the next-generation Apple Watch, which will launch in the coming weeks.
The update will add the latest watch faces and watch apps to the Apple Watch app, as well as the ability to unlock your iPhone by touching a ring on the front.
The Apple Watch will be the first smartwatch to feature a digital heart rate monitor, which can be used to monitor a user’s activity while on the go.
Users will be able use the watch as a heart rate tracker by adding it to the Watch app and linking it to an iPhone.
Apple says the new Watch will deliver an even better experience than the Apple iPhone 4S and 4.0.1, which saw its display refresh twice.