I have a Zeo Bedside I am not currently using. It doesn’t last through the night, so I suspect the headset battery needs to be replaced. It is in my to do pile.
I used it when a sleep study identified issues. For a while I was tuning my deep : REM sleep ratio. I didn’t notice any real improvement in daytime alertness. The stored data on the SD card has much higher resolution than the displayed values. For me it was much more accurate than the motion sensor approach to identifying sleep states.
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