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Clocks
(155395 products found)
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Coffee Cup Sticker Wall Clock Modern Design DIY Kitchen Living Room Decoration Clock
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DIY Wall Clock 3D Acrylic Butterfly Wall Clock - Silver
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Flower Paper Wall Clock Modern Design DIY Kitchen Living Room Decoration Clock
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![JA](https://ug.jumia.is/badges/ja/1/138x18.png?9108)
Led Digital Alarm Clock With Snooze Function, Backlit Projector, For Home, Office Table--Black
![](https://ug.jumia.is/unsafe/fit-in/300x300/filters:fill(white)/product/18/9139701/1.jpg?8948)
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12 Inches 30CM Decorative 3D Wall Clock, Silent And Stylish
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3D LED Digital Alarm Clock Stereo Wall Clock Thermometer Clock - White
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![JA](https://ug.jumia.is/badges/ja/1/138x18.png?9108)
Silver Heart Shaped Wall Clock Sticker
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![JA](https://ug.jumia.is/badges/ja/1/138x18.png?9108)
Silent 3D DIY Wall Clock - Large Modern Design - Roman Gold
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12" 30cm Luminous Quartz Luminous Wall Clock - White
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12 Inches 30 Cm European Style Creative Decorative Round Wooden Wall Clock
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Home Decoration Digital Wall Clock,Rose Round Wall Clock
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12 Inches 30 Cm European Style Creative Decorative Round Wooden Wall Clock
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Silver Heart Shaped Wall Clock Sticker
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Big Round Wall Clock - White, Coffe Brown
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12 Inches 30cm Creative Silent Wall Hanging For Personalized Home
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Silver Removable Circle Combination Wall Clock Sticker
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Big Round Wall Clock - White, Coffe Brown
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12 Inches 30cm Creative Silent Wall Clock Hanging For Personalized Home
![](https://ug.jumia.is/unsafe/fit-in/300x300/filters:fill(white)/product/32/692151/1.jpg?4234)
50*45CM 3D DIY Silent Sticker Wall Clock For Kitchen, Office, Bedroom, Living Room Decor-Black.
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![](https://ug.jumia.is/unsafe/fit-in/300x300/filters:fill(white)/product/26/528094/1.jpg?1498)
Big Round Wall Clock - White, Coffe Brown
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![JA](https://ug.jumia.is/badges/ja/1/138x18.png?9108)
Ggenerici 12 Inches 30cm Modern Simple Fashion Three-dimensional Digital Wall Clock
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3D Wall Clock, Modern DIY Frameless Mirror Sticker Digital Large Black
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12" 30cm Dark Quartz Luminous Wall Clock
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4 Pack Of 4581EL2002C Dryer Drum Roller Assembly Fit For
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Wall Clock White
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Silver Removable Circle Combination Wall Clock Sticker
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SONAM Round Office Wall Clock - White, Gold
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Bedroom Alarm Clock - Pink
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Alarm Clock, Small Heart Shaped Clock, Battery Operated, Simple Green
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Other Office Wall Clock - White
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Clock Insert 3 Inch Quartz Clock Movement Arabic Numerals
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12 Inches 30 Cm European Style Creative Decorative Round Wooden Wall Clock
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Big Round Wall Clock - White, Coffe Brown
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![JA](https://ug.jumia.is/badges/ja/1/138x18.png?9108)
Round Wall Clock, Battery Operated, 12 The Earth Landscape
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LED Digital Wall Alarm Clock and Calendar - Black&Red
![](https://ug.jumia.is/unsafe/fit-in/300x300/filters:fill(white)/product/81/680272/1.jpg?2324)
Vintage Rustic Wood Wall Clock Round Battery Operated for Wall D
![](https://ug.jumia.is/unsafe/fit-in/300x300/filters:fill(white)/product/51/42631/1.jpg?4703)
One Voice Sonam Products Wall Clock-Red
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![JA](https://ug.jumia.is/badges/ja/1/138x18.png?9108)
Oraimo Bedside Speaker OBS-03s - Black, Grey
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Watch Insert 3 "76mm Round Fit-Up Movement Silver Tone Arabic Bezel
![](https://ug.jumia.is/unsafe/fit-in/300x300/filters:fill(white)/product/54/610501/1.jpg?3272)
Alarm Portable Clock- Multicolour
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See AllWall Clocks
A clock is an instrument to indicate, keep and co-ordinate time. It refers to any device for measuring and displaying the time. The clock is one of the oldest human inventions and it has been meeting the need to consistently measure intervals of time shorter than the natural units which are the day, the month and the year. The timekeeping element in every modern clock is a harmonic oscillator, a resonator which is a physical object that vibrates repetitively at a precisely constant frequency. This object can be a pendulum, a tuning fork, a quartz crystal or the vibration of electrons in atoms as they emit microwaves. Analog clocks indicate the time by using angles; digital clocks do same by displaying a numeric representation of time either 24-hour notation or the 12-hour notation. A lot of digital clocks use electronic mechanisms and LCD, LED or VFD displays. Auditory clocks present time as sounds and this is for people who are blind, or just for people who get them for the convenience they bring.
How Modern Clocks Work
The mechanical clock was invented in the 13th century and it initiated a change in timekeeping methods from continuous processes, such as the motion of the gnomon's shadow on a sundial or the flow of liquid in a water clock to periodic oscillatory processes like the swinging of a pendulum or the vibration of a quartz crystal which is believed to have more potential for more accuracy. Almost all modern clocks use oscillation. All oscillating, mechanical, digital and atomic clocks work similarly and can be divided into analogous arts. Every clock is made up an oscillator which is an object which repeats the same motion over and over again having a precisely constant time interval between each repetition. The oscillator is also attached to a controller device. This device sustains the oscillator's motion by replacing the energy it loses to friction and converting its oscillations into a series of pulses. The pulses are then counted and the number of counts is converted into units such as seconds, minutes and hours. Then, an indicator displays the result in a form that humans can easily read and understand.
Where to Buy High Quality Clocks Online
Jumia offers a variety of digital clocks, analog clocks and many more. Get your beautifully designed wall clocks, bedside clocks and all your home decor items here at budget-friendly prices. Shop now and pay cash on delivery.