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Wireless LED Bicycle Rear Light with Alarm and Brake Indicator

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Product Details

Enhance Your Cycling Experience with Advanced Safety Features

Discover the future of cycling safety with our Wireless LED Bicycle Rear Light, a multifunctional device designed to keep you visible and secure on every ride. This innovative product is not just a light; it’s an essential companion for every cyclist seeking a safer, more enjoyable biking experience.

Key Features and Benefits

Our product offers a range of features designed to cater to the needs of cyclists:

  • Multiple Light Modes: Choose from 4 light modes including Auto Fast Strobe, Breathing, Manual Pop Strobe, and Steady to match your visibility needs in various lighting conditions.
  • Powerful Alarm System: With a 115db alarm, the A8 PRO model features 5 adjustable tones, ensuring your bike’s security in public spaces.
  • Long-Lasting Battery: Enjoy up to 30 hours of runtime with the 800mAH battery, ensuring reliability for long rides.
  • Water Splash Proof: IP65 ingress protection makes this light resistant to water splashes, suitable for all-weather use.
  • Dual Mounting Options: Easily install on either saddle rail or round seat post, with both brackets included for your convenience.
  • Accurate Braking Warning: Enhances your safety by alerting others when you’re slowing down or stopping.

When to Use?

Ideal for daily commutes, leisure rides, or intense cycling sessions, this rear light provides visibility and security in low-light conditions and crowded urban environments. The braking warning feature is especially useful in heavy traffic or during group rides, ensuring a safe distance is maintained by others.

What Makes It Special?

What sets our Wireless LED Bicycle Rear Light apart is its combination of safety features and convenience. The unique dome-shaped reflector maximizes visibility while minimizing dazzle, ensuring you’re seen without blinding others. The alarm system, with adjustable tones, adds an extra layer of security against theft. Its dual mounting system and water splash proof design make it adaptable to various biking conditions and preferences.

Your Next Step

Ready to upgrade your cycling experience with enhanced safety and visibility? Add our Wireless LED Bicycle Rear Light to your gear today and ride with confidence, day or night!

Shipping & Delivery


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have been shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 5-20 Business days
Canada, Europe 5-20 Business days
Australia, New Zealand 5-20 Business days
Central & South America 5-25 Business days
Asia 5-20 Business days
Africa 5-25 Business days
*This doesn’t include our 1-3 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • If you did not receive the product within the guaranteed time (45 days not including 1-3 day processing) you can request a refund or a reshipment.
  • If you received the wrong item you can request a refund or a reshipment.
  • If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

We do not issue the refund if:

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of cosmoso.shop (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of cosmoso.shop.

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing, you must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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