This Beautifully Designed Perpetual Calendar is allow the calculation of the day of the week for a given date in from year 2018 to 2040.

Surprise your family, friends and colleagues with this mechanical Perpetual Calendar Desk Piece.

HIGH QUALITY MATERIAL AND PERFECT DETAIL

This is a perfectly designed DIY kit that requires your hands-on work to complete. This mechanical wooden puzzle toy uses precision laser cutting of high- quality plywood, which is safe and convenient.

PACKAGE INCLUDES:

52 x Precision Cut Wooden Pieces
1 x Instruction Manual