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Mathematics Blackboard Clock
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Mathematics Blackboard Clock

- Black

4.82 17 Customer Reviews | Please refer to English description
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    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Jan 31 - Feb 02, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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Main Feature:
- Each hour is marked by a simple math problem
- Matte black powder coated metal
- Powered by: 1 x AA battery ( Not included )
- Size: Diameter: 29.5cm

Movement color is random when delivering. ( Mainly in white and black )



Applicable Placement: Bathroom,Corridor,Living Room,Study
Form: Single Face
Material: Plastic
Motivity Type: Digital
Shape: Circular

Dimensions and Weight

Product weight: 0.1950 kg
Package weight: 0.3560 kg
Package Size(L x W x H): 32.00 x 33.00 x 7.00 cm / 12.6 x 12.99 x 2.76 inches

Package Contents

Package Contents: 1 x Clock

Mathematics Blackboard Clock Black Powder Coated Metal- Black

Mathematics Blackboard Clock Black Powder Coated Metal- Black

Mathematics Blackboard Clock Black Powder Coated Metal- Black

Mathematics Blackboard Clock Black Powder Coated Metal- Black

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Customer Reviews

4.82 out of 5
  • 15
  • 1
  • 1
  • 0
  • 0
See all 17 reviews Write a Review
  • Good item but with some scratches
    Fantastic item. Very well built, good conditioning but with some scratches on it.
    The item arrived inside 2 boxes. One big one, exterior, protecting all the watch and another protecting the black board. The item was very well conditioned but, after opening I saw dome scratches on his surface as you can see in the pictures attached.

    Nov 28,2018

  • ВВ
    Mathematics Blackboard Clock
    Часы отличные. Очень мне они понравились и по качеству и по внешнему виду. Качество не вызывает никаких вопросов. Хртел только для будущих покупателей сказать, что механизм работает тихо без щелчков секундной стрелки... Часы висят на кухне и их совсем не слышно. Берите - очень качественные часики

    Sep 03,2018

  • VV
    Mathematics Blackboard Clock
    Пришел. Шел 3! месяца, однако... Но дошел, что уже хорошо... Заказываю 2 раз, очень нравится и внешний вид, и то что стрелочки открыты - всегда можно подкрутить просто пальцем.

    Jan 30,2019

  • Mariusz
    Mathematics Blackboard Pop Quiz Clock
    good watch-case
    nice materials
    really nice and glow watch

    Jan 13,2017

  • George Malekas
    amazing product.
    amazing product. its was a little difficult to put the mechanism but it turned out well.

    Oct 25,2018

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There are two key factors which will affect the time you receive your items.

Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
Shipping methods
China Warehouse:
Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 23.78% 69.62% 5.87% 25.63
Spain, United Kingdom, Italy, Germany, France & Portugal 1.58% 35.8% 56.84% 5.57% 26.39
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 5.59% 24.44% 55.84% 13.00% 27
Russia 0% 0.04% 64.94% 30.02% 39.53
Japan, Korea 0% 21.30% 68.80% 9.66% 23
Brazil 0% 0% 23.91% 72.09% 38.6
Thailand, Singapore & Malaysia 0% 18.38% 54.27% 25.34% 19.03
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 0.43% 33.18% 65.07% 0.5% 16.43
Spain, United Kingdom, Italy, Germany, France & Portugal 2.55% 18.21% 35.65% 34.27% 26.31
Russia 0% 0% 32.6% 65.4% 36.07
Australia 7.67% 86.60% 5.68% 0% 11
Korea 35.54% 44.45% 19.32% 0% 11.65
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW Warehouse: Typically 3-5 days to the UK, 3-7days to other European countries.
USA Warehouse:Generally, 3-7 days to a USA address.
ES Warehouse:Generally, 2-5 days to the Spain ,3-7 days to the Portugal.
Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
Note:This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control.

Payment accepts PayPal,Credit Cards,Wire Transfer and Westem Union as secure payment methods.

The most convenient payment method in the world.
Wire transfer
For orders which exceed $1,500,please contact us at
Note: please email us the order number,the amount transferred along with currency type,and the exact date of the wire transfer.
Western Union
Please contact us at for details.
Note: please email us the following information after you have paid via Westem Union:
· Control Number(10 digits)
· The exact amount sent along with the currency
· Name of sender.
· Address of sender

Do you want to bulk buy ? Please submit your wholesale inquiry below. Please note we usually don’t offer free shipping on wholesale orders, but the wholesale price will be a big bargain.

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