STEADY 3D Air Stretch Seat [10-Minute to Fully Automatic x Full Body / Heat Function]

Purchased new on Amazon. Used only a few times with no signs of wear.
Selling because I purchased a higher-end model that is a significant upgrade.
Proof of purchase from Amazon is attached as an image (purchased late November 2025).
I discarded the original box as I did not intend to sell it at the time of purchase. It will be shipped in a different cardboard box.
The instruction manual was not included from the beginning. A QR code card for usage explanation videos is included and will be shipped with the item.
There are no scratches or missing parts. It is ready to use as is.

Retail Price: ¥39,990
Manufacturer's Description:

Purpose: Full Body
Power Source: Corded Electric
Material: Polyurethane
Item Weight: 8.5 Kilograms
Brand: STEADY
Color: Black
[10-Minute Full Body, Fully Automatic Seat]: Dedicated to comprehensive full-body care, this seat enhances relaxation with its warming function and unique airbags that provide delicate movements and comfortable pressure stimulation. It's the perfect entry-level care for those who have given up on self-care due to busyness or cost, or for those who don't feel refreshed in the morning. It gently supports the entire body with a structure that enhances relaxation. It features airbags that fully cover the entire leg.
[Equipped with High-Function Infinity Air Airbags]: Powerful and durable airbags firmly support even heavy body parts, providing a relaxing time that envelops the entire body with comfortable air movements. The airbags have undergone a year of prototyping and testing, with air pressure strength and angles meticulously optimized for each body part, including subtle shaking and twisting dynamic movements.
[9 Types of Fully Automatic Mode Selection]: In addition to 4 courses with calculated stimulation methods and sequences, there are 5 targeted modes for specific areas. All modes offer 3 levels of intensity selection, and the usage time can be freely set to 10, 20, or 30 minutes. You can choose according to your mood and physical condition each day, allowing for consistent and effortless care.
[Soothing Foot Care with Gentle Compression]: For tired legs accumulated from long hours of standing, housework, or childcare. Simply insert your legs and zip up for easy application.
[Gentle Warming at 45℃]: A 45℃ warming function is integrated into the central part of the seat. The gentle, comfortable warmth enhances relaxation and the pleasantness of stretching.

Massage
Relaxation
Soothing