Ebay offers Withings ScanWatch 2 - 42mm Black for $203.99 (reg. $369.99) with free shipping. 

Product Description:
ScanWatch 2 is more than a hybrid smartwatch, it is a health guardian on duty 24/7. This next generation includes new and exclusive sensors, including TempTech24/7 module — which for the first time, delivers day & night body temperature variation tracking, alongside proactive heart health notifications, atrial fibrillation detection* via a 1L ECG, and blood oxygen levels. Together these sensors can help anyone maintain a healthy lifestyle, effortlessly. ScanWatch 2 also features its trademark sleep and activity tracking plus an extraordinary battery life of 30 days before needing to be recharged.