Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

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!

Color: Select a color
Size: Select a size
Sale price: $14.99 Regular price:

Free shipping over $49

Free returns

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

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.


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

Questions & Answers

Product Customer Reviews

Skip to reviews
787 Reviews
Write a Review 

Kiprun Kalenji Running Light,black
Filtered by reviews Loading reviews…
No batteries!

Have to admit I missed the "no batteries" part when I ordered this. Several small magnets move in a coil as it rocks slightly side to side as you run, which induced a current for the LEDs. Very light, completely unnoticeable clipped to my cap or shorts.

Action operated.

Love it: no batteries to worry about. Only had it for short time but very satisfied so far

icon-circle-checkmark verified purchase
Good for night runs

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

icon-circle-checkmark verified purchase
Not worth it

Too heavy and has very poor visibility. For this price, you can buy a few high-quality runners lights with way better visibility and which are ultra-lightweight.

icon-circle-checkmark verified purchase
Cool light, but. . .

I wish that it had more attachment options. There’s just a fairly sturdy slide on clip, and I really wish that it had a solid loop that I could put a string or carabiner or something through, to more easily clip it to various clothing items while walking or running.

icon-circle-checkmark verified purchase
Fantastic piece of kit

What a fantastic thing. No more worrying if it’s charged/new batteries etc

icon-circle-checkmark verified purchase

Perfect for dark nights. You don't know you've got them on.Recommended

icon-circle-checkmark verified purchase
Neat little blinker

Love the fact you don’t have to remember to charge it or have the right size batteries. It works at slow jog as well as run. Blinking in time with your step. Doesn’t work when walking on arm (not tested on leg). The strap is small but elasticated so has some give and largely stays in place. Light is noticeable at a distance but not so much that it distracts you with glare up close. Nifty little gizmo.

icon-circle-checkmark verified purchase

Excellent device, works flawless and produces enough light while running. However, I would like to suggest an improvement. Light is mostly emitted in one direction, when wearing on upper arms either sideways, backwards, or forward. By placing lights on opposite sides of the device, visibility from different directions improves considerably.

icon-circle-checkmark verified purchase
Concept good. Shame the clip broke

Very good concept. The clip broke the first time removing it from my jacket. Now it's useless as not sure how to attach otherwise

icon-circle-checkmark verified purchase
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

icon-circle-checkmark verified purchase
good product

useful, easy to see by the driver

icon-circle-checkmark verified purchase
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.

icon-circle-checkmark verified purchase
Innovative running tech

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

icon-circle-checkmark verified purchase

Flash well

icon-circle-checkmark verified purchase
Skip to reviews

Additional Product Information


Structure: 75.0% Polycarbonate, 5.0% PCBA, 10.0% Magnet, 10.0% Copper ; Strap: 90.0% Polyethylene, 10.0% 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.

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

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual

Please Sign In to Post Your Question

In order to notify you about the answer it is required to Sign In.

Sign In