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Kiprun Kalenji, Running Light

Sale price: $14.99 Regular price:

Looking for a light that is always ready, in order to stay visible when running? With its dynamo system, the flashing LEDs light up at each stride, with no batteries required!

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Sale price: $14.99 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8501574

Product Videos

Product Features

A photo of the Kiprun Kalenji, Running Light in use

Kiprun Kalenji, Running Light | Out team of runners has designed this autonomous run light to ensure you can be seen by drivers at night or in low light.

Looking for a light that is always ready, in order to stay visible when running? With its dynamo system, the flashing LEDs light up at each stride, with no batteries required!


Stay visible to drivers at night with 4 flashing red LEDs.

Battery life

Your light is always ready: the LEDs need no batteries to work.


Reduce your environmental impact: no batteries required!


IPX7: resists in 1 meter of water for 30 minutes.


Reduce your environmental impact: no batteries required!

Product Lifestyle Image Gallery

Image Gallery

Kiprun Kalenji, Running Light,black 

Kiprun Kalenji, Running Light,black

Product Customer Reviews

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609 Reviews
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Kiprun Kalenji, Running Light,black
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Good for night runs

Still would recommend running along bright path as one should not depend on this device alone.

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If life gets in the way...

If life gets in the way and means you have to run in the dark.... this is something I can't leave home without... very light weight and lights fabulously

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good product

useful, easy to see by the driver

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Motion Running Lights

This is the second pair of these running lights, others are still in use!, just thought it would be good to have another pair, used now for dark evenings twice a week, simply perfect.

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Innovative running tech

Be seen when you're out on your run! Love the eco-friendly technology - no old batteries going into landfill

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Flash well

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Good whilst in vigorous motion

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Motion light

Great, reliable, easy to use

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Flashing light for running

This doesn’t flash when I run. It’s really disappointing so I can’t use it.

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Very useful running light

I currently have to start my training an hour before sunrise and use a Decathlon head torch and flashing red rear light. My wife bought me two of these motion lights for Christmas and they are excellent. They strap securely to each arm and are particularly useful when approaching a crossroads or road junction because they catch the eye and make you visible to others sideways on. It is important to ensure the strap slides beyond the barb under the clip then they will not come off the strap. I have used them for two weeks and they work very well and are quite comfortable. A very useful and clever light that needs no batteries.

lights for running

I was looking for this sort of light already a long time. Since I will spend few weeks in Europe these light make my early morning running along the roads safer.

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Hello Pieter,


Thank you for supporting Decathlon Hong Kong and your feedback on our product! We are delighted to hear that you have had a positive product experience with us. 


We will keep on maintain our service standards to give you a better purchasing experience.


If you have any inquiries, please feel free to reach back out as we would be more than happy to share and assist. Hope to see you around soon!

Charles Lee

Decathlon Hong Kong Running Team


Very useful

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Dear Rodziah, thank you for your time in leaving us with a 5-Star rating on our product. We are glad that we managed to delight you with the standards of our product. We really appreciate your loyalty with Decathlon. Please let us know if there is anything else we can improve on in the future. Thank you once again for your time and we hope to serve you again soon!

Izzat nacquiudin
Motion light flashing light

Not bright enough.

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Dear Gaik Beng, thank you for taking the time to write the review! We are truly sorry to hear that our product did not meet your expectations. This Motion Light Flashing are using dynamo system which the magnet moves into the coil and generates the electricity which lights the 4 red LEDs and this also are created to be seen from 100 m, which gives a car driving in urban areas enough time to stop. If after moving and the light still not bright, I would like to suggest you to go to the nearest store to exchange with the new one. Satisfying your needs as customer delight is our top priority. Thank you once again for your time and we hope to serve you again soon! :)

Energy Saving - No more Cell

Good and Safe for running in the dark

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Dear Jimmy, thank you for your time in rating our product/service. We are glad that we managed to delight you with the standards of our product/service. We have read through your comments and will take note of these points into improving ourselves to better satisfy your needs. Thank you once again for your time and we hope to serve you again soon! :)


Mounting problem

Hard to angle the light When mounting it

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Additional Product Information



  • 75% Polycarbonate
  • 10% Copper
  • 10%
  • 5% Pcba


  • 90% Polyethylene low density
  • 10% Acrylonitrile butadiene styrene

A lamp with no batteries? how does that work?

Do you understand the dynamo principle on a bike? The Motion Light works in the same way but through an oscillating movement: at each stride, the magnet moves into the coil and generates the electricity that lights the 4 red LEDs. The result? A simple and practical running light. No need for batteries or even an On/Off button: just wear it and it will light up at each stride!

Life span and autonomy, this is a light that you will have for a while:

Because of its dynamo system, the Motion Light does not need any batteries. A plus for the environment... and for your pocket: We have tested this light in our laboratories to ensure that it will still work after 10 million oscillations, i.e. 10 million strides. 10 million strides. Sound good? If you consider that you travel 40" per stride, that means a lifetime of over 10,000 km (6,200 miles). If you run 1,000 km (620 miles) per year, that means 10 years. Ready?

What lies behind the design of the motion light?

The Motion Light clip has been designed to be attached to thin running clothes: on a loop, pocket, belt, etc. And to give you even more choice, the light comes with an adjustable elastic armband. We have chosen red LEDs because it is a color we associated with break lights and slowing down. The light can be seen from 330 feet, which gives a car driving in urban areas enough time to stop. It weighs only 1.8 oz and comes in a transparent case!

Our design team spills the beans on the development of the motion light

The origins of this product can be found in a simple desire: "we wanted to innovate to remove electronic limitations when running." It then took a team of 3 people, 18 months of development, endless discussions with runners, and a commitment: "we were brave enough to say: we are going to make a battery-free product." And after a great number of prototypes, we are proud to offer this simple and practical light. "Our idea was that you would run and we would handle all the rest."

A final tip before setting out?

Gilles, product manager, and Lucie, designer, have some tips for running at night: "It is important to be visible. Especially when running at night in places where you share the road with vehicles a lot bigger than you! In the end, you need to be visible more than to see. Just as you put your shoes on before running, don't forget your light." And for even greater safety? "Ideally, don't run alone" :)



Product testing

In lab tests, this lamp worked for over 10 million oscillations.

Storage instructions

After use, store the light to prevent any unintentional movements. For example, do not leave it in the trunk of your car, to stop the light from coming on needlessly.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

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    Research and development

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    minimize manufacturing costs

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    Minimal retail footprint

    lowers overhead and indirect costs


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