Put your own brainpower to the test as you attempt to open the lock in this delightful wooden mechanical puzzle.

Albert Einsteins brain was the key to unlocking some of the worlds greatest mysteries. From electromagnets to GPS technology and satellites, Einsteins theories paved the way for countless scientific developments and revolutionary inventions.

How will your fare against this fascinating brainteaser?

Difficulty Rating 2/5.

Product dimensions:10 x 7 x 1.5cm.

Manufacturer Recommended Age 8+