Junk item, SUP, So You Stick Traveler, 10 feet

SOYOUS TECH Traveler 10ft
Accessories: Paddle, Fin, Leash Cord, Air Pump, Car Power Air Pump, Gear Bag Backpack

Reason for Junk Condition:
The air deflated after about one day of being inflated. I checked for holes but could not find the location. It is being sold in this condition. Therefore, it is listed as junk.
I believe it can be repaired at a specialized shop.
Purchased about 5 years ago for around 70,000 yen. Used about 5 times.
Selling at a low price. No returns or complaints, please.
Would be great for someone who wants to start SUP or can repair it themselves!