Geek Wrist Watch

$78.00

It's Half-Past a Binomial Coefficient

Regular numbers? Those are for amateurs. Show off your mathematical prowess with a watch that features the equivalent notation of each number.

Cheat Sheet (included with each watch):
12 - a radical
1 - Legendre's constant is a mathematical constant occurring in a formula conjectured by Adrien-Marie Legendre to capture the asymptotic behavior of the prime-counting function. Its value is now known to be exactly 1.
2 - A joke in the math world: An infinite number of mathematicians walk into a bar. The first one orders a beer. The second orders half a beer. The third, a quarter of a beer. The bartender says, "You're all idiots," and pours two beers.
3 - A unicode character XML "numeric character reference."
4 - Modular arithmetic, also known as clock arithmetic, is a system of arithmetic for integers, where numbers "wrap around" after they reach a certain value. The modular multiplicative inverse of 2 (mod 7) is the integer /a/ such that 2*/a/ is congruent to 1 modulo 7.
5 - The Golden Mean...reworked a little.
6 - Three factorial (3*2*1=6)
7 - A repeating decimal that is proven to be exactly equal to 7 with Cauchy's Convergence Test.
8 - Graphical representation of binary code.
9 - An example of a base-4 number, which uses the digits 0, 1, 2 and 3 to represent any real number.
10 - A Binomial Coefficient, also known as the choose function. 5 choose 2 is equal to 5! divided by (2!*(5-2)!)
11 A hexadecimal, or base-16, number.

Made in China. Standard watch battery included. This watch is not water-proof.

Exclusive
Made from
stainless steel
Measurements
Band: 9" L adjustable, Face: 1.25" dia. x .31" D
Ingredients
Item ID
18824

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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 in the US:
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.

My nephew LOVED it!

5

This was a graduation gift for my nephew who will be majoring in Mathematics in college in the fall. The minute he saw it he loved it. He was excited to figure out how to solve each problem/equation. This is definitely a unique gift that was perfect for him.

Columbia, MD

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Successful Graduate Gift ~~!!

5

This proved to be an excellent solution to buying a graduation gift for a most 'gifted' young man who, this year, is graduating from 8th grade. Yes, it is a more 'adult' item than you'd think he would appreciate, though in fact the receipt was rated, "SCORE!!". Right on, eh~~

Bellevue, WA

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The Watch for Wizards and Wise Men!!

4

This is an unusual gift. Since we got it she has had a number of comments all positive and questions on where to purchase. Even her math teacher asked where she got it and said he was going to check out the site so he could get one. Very original and functional too. Playful and informative. Definately Tech wear and a Geek Wanted item. Keep it in your arsenal of great items!!! Well DOne Uncommon goods!!!

Miami Florida

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Looks Pretty Good On...All About Novelty

4

I will most likely wear this as a conversation starter at nerdy events, or just display it in my house somewhere when it's not used. I just think it's a fantastic idea and love looking at it.

Los Angeles, CA

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Graduation Gift

4

Bought this as part of a graduation gift for my daugter. It's the perfect nerdy gift!

Seattle, WA

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Great gift for math lovers!

4

I bought this for my husband, who is an engineer (and quite frankly, a total geek) for his birthday last year and he absolutely loved it. It was a fun gift and he had a good time figuring out what all the numbers are, etc. I will say that the watch was smaller than I expected -- it is definitely a unisex watch. My husband is a big guy and he has to use the last hole on the strap and even at that, the watch barely fits. He really likes it, though, and the band really makes it unique. Unfortunately, the band broke some time ago, but after contacting customer service, they really went above and beyond to get us a replacement. I was beyond pleased with their service and promptness. We had a new watch within days.

Michigan

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Awesome watch!

5

I bought this watch as a graduation gift for my son who is in his senior year of Petroleum Eng. at Univ. of Tulsa. I knew he would love it, so. needless to say I couldn't wait and gave it to him early. He absolutely loved the watch. It's so unique and such a great reminder of all the math courses he has taken. When the watch arrived, my husband told me he wanted it if our son didn't like it! Guess I need to order another one!

Sapulpa, Ok

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Best Gift, Hands Down!

5

My hubs was so excited to see this unique, conversation starter watch. His minor in college was mathematics. This watch was in line with his tech/geek personality. He loves his watch!

Atlanta, GA

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Geek (or nerd) watch

4

attractive, yet nerdy, all in one!

kennebunk ME

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Great for a woman

5

We love the watch. Very clever. Very attractive. But, we needed a gift for a manly man. The watch is smaller and more delicate than we expected -- perfect for a geek woman, but not so much for our big, strong man.

Topeka, Kansas

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Geek Wrist Watch

4.0 115

82.9