Used twice overnight as I suspected that my poor sleep is due to hypoxia, I have confirmed that this is not the case and so I have no further need of the device. Comes with packaging, manuals, charging cord (USB-A). Bought new for £68 on eBay last week. The Wellue O2Ring Pulse Oximeter is a digital finger oximeter that uses infrared sensor technology to track your SpO2 levels and heart rate. It is powered by a rechargeable battery and can connect to your smartphone via Bluetooth. This model comes in a sleek grey colour and includes features such as smartphone compatibility, an alarm, and a USB cable for easy charging. With a manufacturer warranty of 1 year, the Wellue O2Ring Pulse Oximeter is a reliable tool for monitoring your health continuously.
eBay