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5% off
Quantity
1
4.9
9 ratings
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So far so good but one thing…
We did experience a tiredness the first few days, which seems like evidence it’s working. The cord on my Phi3 looks yellow and very old. It doesn’t fit well into the device. I have to really push which is concerning. A lot of planes are moving away from the 120v plug and just offering USB-c. Wish there was a cord option to use on newer planes.
Christine · February 10, 2026
Improving Sleep 😴
Thank you! I have much better sleep!
Pennie · January 19, 2025
C1 has been a game changer for my household. I could tell the difference within the first week of plugging it in. Super cool technology and incredibly beneficial in this day and age! The portables are much needed as well as I have used them everyday when leaving the house and can tell the difference.
Elisha · July 16, 2024
Returns accepted within 30 days




