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Motion Light Flashing Light for Runners, No Battery Required

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Model: 8501574

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Product Features

A photo of the Motion Light Flashing Light for Runners, No Battery Required in use

Motion Light Flashing Light for Runners, No Battery Required is designed for runners who want to 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? Thanks to 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!

Battery life

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


Reduce your environmental impact: no batteries required!

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Motion Light Flashing Light for Runners, No Battery Required,black 

Motion Light Flashing Light for Runners, No Battery Required,black

Product Customer Reviews

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Motion Light Flashing Light for Runners, No Battery Required,black
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Could be a life saver

It really works and it's quite bright. Totally sealed means u can wash it after use. The clip is a bit tight and not easy to clip on thicker clothing. Other than that, it's super. I hope they make a white LED one and I will buy it and wear at the front.

Hello Teck Beng,

Thank you for your review with our Motion Light - Flashing light for runners, no battery required.

We are glad our product has been a great use to you in your fitness journey! We will definitely push in your suggestion to our production team. Do leave us another review after more use of this product.

Your valuable feedback goes a long way in development of our products. Do check out website for more products see you in our store once we are open, till then stay safe and healthy!

Thank you and have a good day ahead :) !

Suzy Panday

Sports Advisor

Decathlon Jookoon

Not bad, quite satsified

Versatile, useful and well-designed, although a little pricey. Used it twice on pre-dawn runs and it works quite well

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Hello Frankie,

Thank you for the review about our product: "MOTION LIGHT FLASHING RUN LIGHT, NO BATTERY REQUIRED".

We are glad you find them useful and we hope truly they are up to your expectations too, and certainly that they’re worth the money for their quality. 

We, in Decathlon, always strive to makes sports available to everyone via our affordable price, and we hope you are amongst those that has benefitted from this business philosophy of ours.

We hope to see you soon, when our Stores can be opened again. 
Meantime, stay safe and take care, Frankie.

Stay healthy, keep fit & stay happy at home, during this circuit-breaker time!
Sports Advisor
Decathlon Singapore

"Keeping Fit Through Sports - and Decathlon!"
Runners Tail Lights.

Now the dark evenings are upon us, evening runners need not only head lamps to light their way, but tail lights to light them up for traffic coming up behind them, again these Motion Lights have it all simply attach to the arm or back, I was so impressed with their design and function so easy to use, another great item from Decathlon.

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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.

luz eterna

luz que da visibilidad, sin necesidad de pilas ni recargas. Luz eterna

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Sin pilas ni batería

Utilizado para Trail y marcha nocturna

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me gustaría mas luz aunque llevara pilas que fuese mas potente por seguridad

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No se para que sirve

Inútil total

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Hola José Ignacio,

Muchas gracias por contactarnos a través de la web, sobre la luz intermitente de la marca Kalenji.

El modelo Motion Light está pensado para emitir luz roja cuando usted va corriendo y así facilitar que sea visto por otros corredores, vehículos... Es un elemento de seguridad que se activa con la vibración de la carrera. Usted mismo puede comprobar su luz si lo coge con la mano y lo mueve.

Un saludo y espero que le sirva de ayuda.

RAUL- Experto en Running Carretera

Yo la he comprado con la intención de colgársela a mi perro en el arnés cuando salimos a correr por la noche en la montaña, me parece genial la tecnología que utiliza y es perfecta para dicho fin, eso para cuando salga con el, cuando salga solo la usare yo por supuesto, Recomendado.

Luz running intermitente sin pilas.

Me parece un accesorio muy práctico y necesario para la gente q sale a correr por la noche.

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Luz intermitente

Buen producto

trés sécurisant

je porte ce petit accessoire à la cheville (sangle velcro) pour courir de nuit à la est parfaitement efficace ,hyper visible et tellement léger que je ne le sens jamais...un trés bon article !

Sans utilité

Souhaitant une lampe de running écologique et économique, cette lampe paraissait être un bon compromis. Au final, très déçu de mon achat car la lampe est peu visible et manque de réactivité aux mouvements. Convient très bien comme jouet à un enfant.


Tout d'abord merci d'avoir pris le temps de donner votre avis sur ces lampes de running Kiprun.

Cette lampe a été conçue et validée pour clignoter lors de la course il n'est donc pas normal qu'elle ne fonctionne pas lors de vos courses.

Je vous invite à rapporter ce produit en magasin dès que nous aurons pu ré-ouvrir.

Bien cordialement

Anthony Dulieu Leader Kiprun Decathlon

Ne s allume pas…

Ne s allume pas en monde marche nordique pas assez de choc au sol à mon avis. A réserver pour la course à pied.

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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:

Thanks to 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 600 miles. If you run 600 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.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


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