HaruDesign CO2 Generator PRO-D601s (Used)

Used HaruDesign CO2 Generator PRO-D601s

I am selling this item, which I purchased used two years ago but never ended up using.
Please understand that this has been stored for a long time before purchasing.
I did plug it in and confirmed that the solenoid valve operates, but I have not tested it for extended periods.

Includes a new, unused diffuser.
Comes with tubing, but it may be safer to prepare new tubing separately just in case.
Citric acid and baking soda are not included.

There may be other undiscovered defects, so please refrain from purchasing if you are sensitive about such things. Therefore, please understand that this is a no-claim, no-return (NCNR) sale.

The pricing is based on recent sales prices.

If you are in a hurry, I apologize, but this is for those who can wait patiently, as I often miss notifications on Mercari.
Also, I will need to purchase packing materials after your purchase, so please allow considerable time for shipping.
Shipping will be done on weekends (Saturdays or Sundays) or holidays.
I will provide an approximate shipping estimate via transaction message.

I do not wish to do business with those who ask questions despite the information being in the description, those who make unreasonable price reduction requests, or those who rudely rush shipping. I will completely ignore such comments.
Some people frequently ask the seller detailed questions about the product's performance, which I do not understand. Please search for the product specifications from the manufacturer or other sources.
I also do not wish to do business with those who have poor ratings. Thank you for your understanding.