Amazon sells the recently released $279 Apple Watch SE Smart Watch as well as the updated Apple Watch Series 6 Smart Watch at $399.
The Apple Watch SE is the cost-effective replacement for the highly popular Apple 3 Series watches, and includes their latest, ever-on altimeter, gyroscope, accelerometer, sleep monitoring, drop detection, hand washing, and international cellular emergency SOS help. It shares the same S5 processor as the 5 Series but supports the latest Apple Family Setup and Fitness Plus.
Apple Watch Series 6 has the same core features but includes the Always-On Retina Display, the ECG application, as well as Apple’s new Blood Oxygen application support. Your new Blood Oxygen sensor measures your blood level of oxygen for fast results in about 15 seconds.