I found this useful: AnandTech built a side-by-side chart comparing the specs of the iPhone SE vs all the iPhones 11.

One spec, Battery Life, shown as ?? in the AnandTech chart, is listed on China Telecom’s web site as 1,821 mAh, the same as the iPhone 8.

Also, iPhone SE RAM is said to be 3GB, compared to the 2GB of the iPhone 8. Via the same source.