The Huawei Watch Ultimate features a 1.5-inch LTPO AMOLED display with a peak brightness of up to 1000 nits, which is designed to be visible in bright sunlight[7]. While this high brightness helps with readability outdoors, the screen's performance in direct sunlight is generally good but not exceptional. It is legible under bright conditions, though it may not be as bright as the specifications suggest[7].
The watch's sapphire glass dial has anti-scratch and anti-glare properties, which help reduce reflections and improve visibility[9]. However, like many AMOLED screens, it can still suffer from some glare due to its reflective nature, especially when compared to screens optimized specifically for outdoor use like those on some e-ink devices.
Overall, while the Huawei Watch Ultimate's screen is designed to handle sunlight well, it may still experience some glare or reflections, particularly if not angled correctly or if the sun is directly overhead. The anti-glare properties of the sapphire glass help mitigate this issue, but it is not entirely eliminated.
Citations:
[1] https://www.youtube.com/watch?v=TtwArJ4JcfE
[2] https://www.vopmart.com/blog/post/Huawei-Watch-Ultimate-Review
[3] https://www.youtube.com/watch?v=to1SZXFYYVY
[4] https://www.youtube.com/watch?v=lNSAxaDK8Ik
[5] https://root-nation.com/en/gadgets-en/wearables-en/en-huawei-watch-ultimate-design-review/
[6] https://www-file.huawei.com/-/media/corp2020/pdf/giv/intelligent_world_2030_en.pdf
[7] https://www.phonearena.com/reviews/huawei-watch-ultimate-review_id5760
[8] https://www.youtube.com/watch?v=JnZpJ4fHlEk
[9] https://www.huaweicentral.com/huawei-unveils-watch-ultimate-green-edition-with-pro-level-sports-features/