#$#$&-#_-- To protect the cartridge body, we will pack cushioning material inside the box. Please let us know in advance if you do not need it. We do not accept returns or exchanges for any damage that occurs during shipping. #$&--_&#-$&#-_#. Replacement Cartridge ■Manufacturer/Seller: Nihon Amway ■＜Approximate Cartridge Replacement Time＞: When the cartridge replacement time is approaching, the bottom bar of the lifespan indicator icon will blink, and an electronic sound will beep once when using purified water. The replacement time is approximately one month after this state. ※ Please replace the cartridge when the replacement cartridge icon on the monitor lights up red. Also, the replacement timing is either after 5,000L or after 1 year of purified water use, whichever comes first. You can check the replacement timing from the number of seconds it takes to fill 1L of water. By running water in the purified water mode and measuring the time it takes to fill 1L of water, you can determine the daily usage time※ (approximate) for using 5,000L in one year. 30 seconds ⇒ 7 minutes/day 60 seconds ⇒ 13 minutes/day ※ Assuming 13L of purified water used per day.