World's smallest and lightest (A4 size) oxygen scrubber that can be easily used by anyone. Sales record: more than 25,000 units 【Features】 World's smallest and lightest (A4 size)　　 　 A4 size, 2.6 kg in weight, and easy to carry. 2. Can be used anywhere! (Three-polar power source)　　 The three-pole power supply (AC, battery, and in-vehicle) allows you to use it not only in your room, but also when you are out and about. Moreover, you can use it in your car. 3. World's first cartridge removable function (patented)　　 Easy replacement of the cartridge allows you to inhale high quality oxygen at any time. 4. Made in Japan 5. Other features ・Dual-use adapter for overseas and domestic use (AC100-240V) ・Vertical or horizontal installation ・Quiet design (approx. 40dB) 6. Innovative design by Mr. Chiachi Murata　　 　 Designer of Microsoft Xbox and other products　　 A wide variety of colors (white, black, turquoise) are available to fit the room.　　　　 The product is designed to be pleasing to the eye as well. 7. Used by top Japanese athletes Remarks ・This product is not a medical device.　 ・If you experience any physical discomfort while using this product, discontinue use immediately. ・Do not use this product while smoking or near a fire.