The SengSo Clock 5x5 M is an enlarged, magnetic version of the classic Clock puzzle. Compared with the standard 3x3 Clock with 9 clocks, this model takes the concept to the 5x5 format, increasing the number of clock faces and pins, and therefore the complexity of each movement. It is not a puzzle covered by the official WCA regulations for competition, since the only Clock category recognized by the WCA is the 3x3, but it fits well within the catalog dedicated to Clock variants for practice and collecting.

The ShengShou Clock puzzle family has expanded in recent years towards alternative formats (with 6, 9 and 11 clocks), and this model is part of that exploration. By incorporating magnets into the wheel mechanism, the feel is firmer and the clicks between positions are perceived clearly, something especially useful when several clocks have to be moved at the same time.

Additional public technical information on this specific model is limited, so only verified data are documented on this sheet: manufacturer SengSo (ShengShou), Clock puzzle format in 5x5 variant and magnetic version. Other data such as exact weight or dimensions are not included here to avoid featuring unconfirmed information.

• 5x5 version of the classic Clock puzzle.
• Magnetic mechanism with marked clicks.
• Format not included in the WCA regulations (outside official competition).
• Intended for advanced practice and collecting.
• Natural complement to the standard 3x3 Clock.

It is a recommendable option for anyone who already masters the WCA 3x3 Clock and wants to explore larger formats without leaving the puzzle's logic. Since it is not an official category, it is enjoyed more as a personal challenge or collector's piece, and it also helps to better understand the Clock's internal mechanics when facing a larger board. SengSo's magnetic line maintains a consistent feel across all its models, and the extension to the 5x5 format keeps that construction philosophy. It is a good way to expand the Clock world beyond the nine-clock standard, and also works as a piece that complements a collection already started with the manufacturer's own magnetic 3x3 Clock.

• Clock puzzle in 5x5 format
• Magnetic version with firm clicks
• Not included in the official WCA category
• Intended for advanced practice and collecting
• Natural extension of the standard 3x3 Clock