Circle 2 (UK version here).
Logitech Circle 2 smart cameras are standalone Wi-Fi devices and base station is not necessary. The standard features are digital zoom, 2-way talk, motion detection, 180º field-of-view, night vision and so on. However, the free cloud storage is good for 24 hours only which is common for most smart security cameras.
Paid subscriptions plans are available for extended storage in selected countries but the supporting country info is no longer available. Since these smart cameras are designed for both indoor and outdoor environments, the cost is therefore higher.