Write, erase and write some more all year long to stay on top of a busy, frequently changing schedule. Reversible: horizontal or vertical annual view. Write-on/wipe-off surface. Wet-erase marker included. Quarterly Breaks on Both Sides. Dated/Undated: Dated; Calendar Format: Yearly; Page Format: Horizontal: One Year per Page; Vertical: One Year per Page; Edition Year: 2023.