The Sigel Conceptum book calendar for the period from July 2025 to December 2026 is an elegant and functional planning tool that is ideal for organising appointments and notes. With an attractive hardcover design in black, this calendar not only has an appealing look, but is also highly durable. The weekly overview enables clear and structured planning, while the practical A5 format ensures easy handling and portability. The calendar is written in German and is suitable for both personal and professional use. An elasticated band ensures that the calendar remains securely closed and a pen loop offers additional convenience for storing a writing instrument. The book calendar is therefore a well thought-out choice for anyone who values organisation and style.