# Equation Geek Watch

This smart and stylish watch features the equivalent notation of each number.

\$68.00

## Geeks: We've Got Your Number

Regular numbers? Those are for amateurs. Bring your inner genius out for all to envy with a smart and stylish watch that features the equivalent notation of each number.

For nascent mathematicians and victims of the occasional memory lapse, a cheat sheet is included with each watch.:
1: i is equal to the square root of -1, so i^2= -1. The absolute value of -1 is 1.
2: This represents 2 in binary code.
3: The cube root of 27
4: 11 base 3, which represents 4 in the ternary system
5: Log(20x)=2 is equivalent to 20x=10^2 or 20x=100, where x=5.
6: Euler's product formula: phi(p^k)=(p^k)(1-(1/p)), where (p^k)=9
7: This is a binomial coefficient, so with the formula n/k = (n!)/((k!)(n-k)!), n/k=7.
8: This is a natural logarithm where ln(e^x)=x, so ln(e^8)=8.
9: This summation is equal to 3(1)+3(2)=3+6=9.
10: Since clocks "wrap around" every 12 hours, the hour number starts over after it reaches 12. This is arithmetic modulo 12. 10mod12 is 10:00, and 16mod12 would be 4:00, for example.
11: B'L is Legendre's constant, which is equal to 1, so this equation becomes the square root of 121, which is 11.

Made in China. Japanese movement. 3 ATM water and splash resistant.

For more geeky timepieces, check out the Equation Geek Clock .

Exclusive
stainless steel, steel, Glass
Measurements
Face 1.65" dia., case .315" H; Adjustable band 9" L, 20mm W
Item ID
22195

Still haven't found the details you're looking for? Check out our Product Q&A!

Most of our items are in stock and will ship quickly. Orders for in-stock items placed before 5pm ET Monday through Friday, excluding Federal holidays, will ship:
Economy shipping:
within 8 days, arriving no later than the 9th business day after the order was placed.
Standard shipping:
within 4 days, arriving 5 business days after the order was placed.
Preferred shipping:
within 2 days, arriving 3 business days after the order was placed.
Expedited shipping:
within 1 day, arriving 2 business days after the order was placed.
Express shipping:
will ship the same day and arrive 1 business day later.

### you might also like

\$64.00

\$30.00

\$95.00

\$89.00

\$80.00

• #### Math Formulas Tie

\$49.00

REVIEW SNAPSHOT®

by PowerReviews
UncommonGoodsEquation Geek Watch

4.4

(based on 93 reviews)

Ratings Distribution

• 5 Stars

(55)

• 4 Stars

(29)

• 3 Stars

(5)

• 2 Stars

(3)

• 1 Stars

(1)

97%

of respondents would recommend this to a friend.

Pros

• Stylish (70)
• Good quality (42)
• Accurate (20)
• Reliable (19)

Cons

• Heavy / bulky (3)

Best Uses

• Everyday (46)
• Daily use (19)
• Formal (12)
• Travel (12)
• Work (11)
• Reviewer Profile:
• Practical (39), Modern (29), Stylish (29), Classic style (19), Athletic (13)
• Yes (131), No (9)
• Christmas or hanukkah (35), Other (20), Birthday (18)

Reviewed by 93 customers

Displaying reviews 1-10

Previous | Next »

5.0

It's beautiful!

By

from New York, NY

About Me Classic, Modern, Practical, Stylish

Pros

• Accurate
• Comfortable
• Stylish

Cons

• Takes a little while to get used to

Best Uses

• Daily Use
• Work

I definitely don't recommend this if you prefer digital watches and not having to read an analog clock. It's a great conversation starter. It's a little bulky and takes a while to get used to if you aren't used to wearing a watch or a metal strap, but it's a good size and weight.

• Yes

5.0

My son loves his watch and thanks me again and again.

By

from Cedar City

Pros

• Accurate
• Comfortable
• Quality Construction
• Stylish
• Water Resistant

Cons

• Scratches Easily

Best Uses

• Daily Use
• Formal Events
• Travel
• Work

Every day use, his friends get a kick out of it, and he just really likes it. He even learned some new math facts and looked up some more

Delivery was prompt.

• Yes

5.0

Very cool, unique watch that is mathematically correct!

By

from Chicago

Pros

• Accurate
• Comfortable
• Stylish
• Water Resistant

Cons

Best Uses

• Yes

4.0

A Geek's Delight

By

from Utah

Pros

• Stylish

Cons

Best Uses

• Daily Use
• Formal Events
• Work

I cannot speak to the quality of this product myself since it was sent many states away. However, the recipient loved it.

• Yes

5.0

Math Equations

By

from Oklahoma

About Me Athletic, High End Shopper, Practical

Pros

• Accurate

Cons

Best Uses

• Travel

The watch arouses human interaction. Most people are curious to understand the significance of the equations.

• No

5.0

By

from Victor, NY

Pros

• Accurate
• Comfortable
• Quality Construction
• Stylish

Cons

Best Uses

• Daily Use
• Formal Events
• Travel
• Work

This watch was perfect for my fiance, he wears it almost every day.

• Yes

5.0

#sweepstakes

By

from Boston

Pros

• Comfortable
• Quality Construction
• Stylish

Cons

Best Uses

• Daily Use

My son (college math major) loved his Christmas gift. He enjoyed the variety of math equations on the watch and showed it to many friends and fellow math students.

• Yes

4.0

My husband and his son adore this watch!

By

from Mundelein, IL

Pros

• Accurate
• Comfortable
• Quality Construction
• Water Resistant

Cons

• Strap Wears Easily

Best Uses

• Daily Use

We switched out the strap for a nicer leather one, but the watch itself is a joy, and always contributes to the conversation!

• Yes

5.0

So fun.

By

from Los Angeles CA

Pros

• Comfortable
• Quality Construction
• Stylish

Cons

Best Uses

• Daily Use

Great for daily use. Always get compliments.

• No, No

4.0

Much better quality than the competitors

By

from Jacksboro, TN

Pros

• Quality Construction
• Stylish

Cons

• Excess strap on small wrists

Best Uses

• Daily Use
• Travel
• Work