Pop Quiz Watch

The Pop Quiz Watch is a baby version of our Pop Quiz Clocks and is just as perfect for maths geeks. Instead of the usual 1-12 characters, each number is represented by a fiendishly tricky sum. The only downside is that once you've spent half an hour trying to work out the answer to the sum and establish the time, you may well be late for whatever it is you were doing. When you get used to it, though, you'll soon wonder why more watches don't give your grey matter a better work-out.

• The Equation Watch is a mathematical challenge for anyone who wants to know the time.
• Each number is replaced by a complex sum.
• Blackboard style.
• Black adjustable strap.
• Water resistant to 30 m.
• One size fits all.
• Suitable for ages 8 years +.

Size:

• H: 1 W: 5 D: 25 cm.