This is a set of two Rinnai planners for 2026. They are unused. They are compact, about 4mm thick. Width: 8.8cm, Height: 16cm In addition to a regular calendar and memo pad, they include a list of Rinnai's branches and sales offices nationwide. This is convenient! Furthermore, they also have a list of gas companies. And, the best part is that they even include a list of error codes for appliances like water heaters and stoves!! It's too convenient. Perhaps it's a divine planner. This is a set of two, so couples, siblings, or friends can each have one. You could give one to your older child and one to your younger child, or you could put one in the mailbox of that person who hasn't been seen lately, once a week. Water heaters tend to break down in the cold season, but with this planner, you might even look forward to a water heater malfunction... maybe...!?