I picked up this pedal from a guy locally about 2 years ago. He said he made it based on the Klon Centaur buffer circuit that he found online, though I want to make clear that I have no way to verify this, as the original Klon circuits are all "gooped". I recently scaled down all of my pedals and have no further need for it. It works perfectly fine. The white LED is super bright and shines perfectly on stage and even kind of resembles a very small non-horsie Klon. There is "scratchy side" velcro on the back and it is secured well. Priced to sell. 50 dollars for a toggleable buffer is a pretty solid deal. Runs off a standard 9V power supply, and does not take batteries (Power Supply not included.) One of the screws on the back is stripped, which prevents the unit from being opened, though someone who has more basic tool knowledge than my caveman self can probably get it open. Shipping to the continental US only via USPS.
Thanks for looking, and feel free to reach out if you have any questions!