iFixit teardown: Apple Watch Series 12 and Ultra 4 both score 4/10
iFixit's teardown finds the Series 12 moves to 4/10 on repairability, while the Ultra 4 matches its predecessor's score.
iFixit published its teardown of the Apple Watch Series 12 and the Apple Watch Ultra 4, awarding both smartwatches a repairability score of 4 out of 10, according to 9to5mac.com.
The Ultra 4's score is unchanged from the previous Ultra model. The Series 12's 4/10 marks a 1-point increase over the last base-model Apple Watch that iFixit scored.
The batteries differ in how they come out. The Series 12's 1.461 Wh battery uses stretch-release adhesive and a pull tab, while the Ultra 4's 2.444 Wh battery requires removing the screen to replace it. iFixit also noted that the Series 12's display tolerances are tighter than the Ultra 4's.
For comparison, iFixit gave Google's Pixel Watch 5 a 9/10 repairability score, noting that its display can be removed with two Torx screws and a gasket.
In October 2025, iFixit reported battery capacities of 2.313 Wh for the Ultra 3 and 1.403 Wh for the 46mm Series 11.
Quick answers
What repairability score did iFixit give the Apple Watch Series 12 and Ultra 4?
iFixit gave both the Apple Watch Series 12 and the Apple Watch Ultra 4 a 4/10 repairability score.
How do you replace the battery in the Apple Watch Ultra 4?
iFixit's teardown says the Ultra 4's 2.444 Wh battery requires removing the screen to replace it.
What score did iFixit give the Pixel Watch 5?
iFixit gave the Google Pixel Watch 5 a 9/10 repairability score.