The Equation Unisex Quartz Water Resistant Analog Black Strap Watch
  amazon
29.99
 
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Product Description
About the Product :

  • Each hour has been replaced with an equation equalling that number!
  • Shower-proof
  • A geek-tastic gift for the nerd in your life
  • Fuddle your friends and confound your co-workers
  • Requires 1 x SR626SW (included)
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