Does exactly what it's advertised to do, allows sleep apnea sufferers to take better control of their condition via the oxygen level tracking. The vibration that's felt on the finger you're wearing the WearO2 ring when you slip below your desired oxygen levels could save your life. Excellent product at a truly great price for what it delivers. Highly recommended.
produit conforme, livraison rapide, équipe très réactive.
Very happy with the price and delivery and service.
The app can be improved on by having more detailed graphs.
The product has a silicone band around it which grabs onto sheets and blankets while moving during sleep. I now wear the ring facing the inside on my palm to ruduce snagging. A wrist version may be better.