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The Prime Numbers Watch - The Wristwatch For Mathematicians & Numerologists
The Prime Time Maths watch adds a bit of mathematical spice to everyday telling the time
No ordinary numbers here - only the prime numbers 2, 3, 5, 7, and 11 are untouched
Non-primes 4, 6, 8, 9, 10 and 12 are creatively expressed in appropriate mathematical formulae
A mathematician's dream of a watch in a matching gift box
38mm domed watch crystal
Quartz movement with replaceable battery