These generally come As New
from argos / Ebay from my experience. Low price I reckon.44mm link
Apple Watch Series 6 lets you measure your blood oxygen level with a revolutionary new sensor and app. Take an ECG from your wrist. See your fitness metrics on the enhanced Always-On Retina display, now 2.5x brighter outdoors when your wrist is down. Set a bedtime routine and track your sleep. And reply to calls and messages straight from your wrist. It's the ultimate device for a healthier, more active, more connected life.
GPS model lets you take calls and reply to texts from your wrist. Measure your blood oxygen with an all-new sensor and app. Check your heart rhythm with the ECG app