4 ms·
It really comes down to how much accuracy you really need. I use a Fitbit Charge HR and while I'm sure it's not perfect, it gives me a general idea of how much
by haswell 9y ago
It really comes down to how much accuracy you really need. I use a Fitbit Charge HR and while I'm sure it's not perfect, it gives me a general idea of how much time I spend in bed/sleeping.
I'm sure it's not accurate down to the minute, but I do think it gives me a general idea of how much sleep I get. For me, that's fine, and really all I need.