This is a regular cartridge specifically for the Phyton Air. I am selling these because I have extra from a bulk purchase. Great for preventing colds like the flu and COVID-19 in the coming season. For those who need multiple cartridges, I offer the following discounts. Shipping via Takkyubin (home delivery service) is included. 1 cartridge: 3200 yen 2 cartridges: 5700 yen 3 cartridges: 8200 yen 4 cartridges: 10500 yen 5 cartridges: 12500 yen 6 cartridges: 14200 yen Please inquire if you are interested in Expert, Specialist, or other products.