Samsung Galaxy Watch 4 vs Galaxy Watch 4 Classic: What's the difference?

The Galaxy Watch 4 and Watch 4 Classic have a similar design, but the Classic is bulkier and has a rotating bezel. (image credit: Evan Blass / Pocket-lint)
Both the Galaxy Watch 4 and Watch 4 Classic come with a buckle fastening and multiple strap options. (image credit: Evan Blass / Pocket-lint)
Both models should have sensors under the watch casing, including the BioActive Sensor. (image credit: Evan Blass / Pocket-lint)
The Galaxy Watch 4 comes in two sizes - 40mm and 44mm, while the Galaxy Watch 4 Classic comes in two sizes too but larger - 42mm and 46mm. (image credit: Evan Blass / Pocket-lint)
The Watch 4 comes in four colour options in total and has an aluminium body. The Watch 4 Classic comes in two colour options with a stainless steel body. (image credit: Evan Blass / Pocket-lint)