Which one is the latest Eufy Door Bell [eufy Wi-Fi Video, 2K Resolution] OR [eufy Wi-Fi Video , 1080p-Grade Resolution]

I am in market for a door bell and I have zeroed to Eufy Wireless. When I got to Amazon I can confused. When I select 2K resolution Door Bell , Amazon says there is a newer item with 1080p-Grade reolution. Is 2K better than 1080p-Grade ? Does both require a Home Base ?
What are the differances ?
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