Apple Watch Ultra screen is soooo dim at full brightness

M1 Mac mini, macOS 13.4;  Watch, series 7 GPS/cellular, watchOS 9.5; iPad Pro 2nd Gen, iPadOS 16.5; iPhone 12 Pro, iOS 16.5; TV 4th Gen, tvOS 16.5; HomePods, audioOS 16.5 and Airport Express w/ Airplay 2

Know this thread is old, but addresses my concern. Getting a new 15 Pro Friday and looking to upgrade to the Ultra2 from my S4. Took the demo Ultra from an Apple store outside with my S4 and the S4 was much brighter. Both watches on max brightness. Both did not do well when sun was directly on them. Even inside the S4 looked brighter and sharper. Ultra seemed dull. Need to rethink buying Ultra2. Will have to test it and S9 with sapphire screen, as that is the screen on my S4. Thanks for any thoughts--

Your S4 watch has a 1K nits display.

The S9 has an always-on retina display up to 2K nits. The Ultra2 has an always-on retina display up to 3K nits.

The S9 comes in GPS-Only and GPS+Cellular. The GPS-only can do anything that the GPS+Cellular can do as long as you have your iPhone with you. The S9 starts at $399. The U2 is $799.

Thanks, but kinda know that. More concerned on dimness. Reviews viewed on my MacBook show it brighter. real world didn't for me. Will trial Ultra2 when it comes out.