Inside the iPhone SE

The most noticable thing about the iPhone SE is its striking resemblance to the iPhone 5 and 5S. This is down to the fact that Apple has use pretty much the same design for the chassis, with only the minor changes of matte-chamfered edges where there were previously shiny ones, and a stainless steel insert for the Apple insignia on the rear.
This will work well for many users as it means all those cases and accessories that were bought for the older 5 and 5S will fit with the new device.
See also: iPhone SE vs iPhone 5S comparison review