I cannot in good conscience recommend fitbits. A great deal is made of the new Fitbit having an spo2 sensor, but you cannot access any data from it. Instead, you get an "estimate" if you sleep long enough. No data is available as you exercise. Edit, it turns out that the band also causes latex reactions, so you have to take it off like Fitbit recommends, but it keeps opening popups suggesting you wear it longer. I'll do that when the cheap non allergenic band arrives, stop pestering me...