🛒 Where to Buy
🛒 Compare prices on Wikishopline →
Or browse alternatives:
Affiliate links · Last verified 2026-05-21 · 🌍 Outside the US? Amazon and eBay will redirect you to your country's local store automatically.
The Pitch on Shark Tank
Circadian Optics appeared on Shark Tank (Season 11, Episode 2) in 2019. No deal.
Frequently Asked Questions
Is Circadian Optics still in business?
Circadian Optics is still listed on Amazon and eBay — see the buy links below for the latest availability.
Who founded Circadian Optics?
Founder details aren't publicly documented for Circadian Optics.
Did Circadian Optics get a deal on Shark Tank?
Circadian Optics pitched on Shark Tank but didn't strike a deal: No deal.
Where can I buy Circadian Optics?
Circadian Optics is available on Amazon and eBay. We compare current prices across both at our /results page — link below.
Related from Shark Tank
Affiliate disclosure: Wikishopline earns a commission when you click through to Amazon, eBay, AliExpress, or TEMU and make a purchase — at no extra cost to you. Full disclosure →
Wikishopline is not affiliated with ABC, Shark Tank, or any production company. Product names and trademarks are property of their respective owners.