Portable Oxygen Can, Set of 4, New and Unopened

Received as a gift from an acquaintance 2 years ago and kept in storage at home.
Since I had no plans to use it, I am offering it to someone who needs it.
Please only purchase if you understand and accept this condition.

[Product Overview]
* For sports and leisure.
* For mountain climbing.
* For oxygen supplementation due to illness, etc.
* For fatigue from work or studying.
* For transporting tropical fish, etc.
This is an oxygen can that provides peace of mind to have on hand.

Capacity: 5L
Quantity: Set of 4
Contents: 95% Oxygen Purity, Filled Volume 5L
Usage: 50-60 times (when used for 2 seconds per use)
Product Name: ① Refre Air
3 bottles by Pearl Metal Co., Ltd.
(One of these has a torn package - see image 2)
② Pro-Fits Portable Oxygen
1 bottle by Pip Co., Ltd.

[Usage and Precautions]
Please be sure to check the precautions on the can's surface before use. Guidelines for safe use are provided.