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What Do The Experts Think 

Nick Drombosky is the founder of Banker Supply, a bike store located in Echo Park, LA.

Chris Reynolds is the Director and Publisher of Bicyclist: SoCal & Beyond: a social enterprise promoting bicycle riding for sport, activity, and transportation.


Rayo is a bicycle tail-light designed for the modern cyclist. Equipped with ultra-bright LEDs, engineered optics, motion detection, and bluetooth connectivity features, Rayo’s functionalities not only boost your riding safety, but also make your riding experience more convenient, entertaining, and seamless.












Rayo comes in five appealing and unique colors to make you and your bike look better than ever. You love your bike. Give it what it deserves.








Rayo uses specifically designed total internal reflection (TIR) lenses to direct and focus light emitted by LEDs. The combination of three LEDs and two TIR lenses with different specifications enhances visibility from both the rear and the sides.


Upon braking, Rayo will detect that you are slowing down and will automatically trigger a brake light, warning traffic behind you. At the core of this feature is an algorithm that accurately tracks the movement of the bike, similar to what is integrated into modern drones.


The blinking patterns of each LED light in Rayo are user-configurable, allowing you to create the best signaling options depending on your riding style, traffic, and weather conditions. Future updates will include additional flashing patterns.


At a maximum of 90 lumens with specialized optics, Rayo is also daylight visible. Catch the attention of vehicles, other riders, and pedestrians, no matter what time of day it is.


Rayo's one-of-a-kind feature is group LED synchronization. Rayo can synchronize flashing patterns with nearby Rayo lights, making you and fellow riders stand out as a group. Synchronization takes effect without the hassle of manually pairing devices.


Rayo offers a theft alert feature that notifies you through the Rayo mobile app when unfamiliar movement is detected on your bike. Now, take that break without worrying about whether or not your bike is being tampered with.


Rayo's mobile app allows you to configure Rayo's many features intuitively. Using Bluetooth Low Energy, connecting Rayo to your smartphone is fast and simple.


All of Rayo’s features come sealed within an IP67 waterproof body. Touch control has been seamlessly integrated to make Rayo effortless to operate. A built-in USB port makes Rayo rechargeable at home, in the office, and from external power banks.

Balanced Visibility

Generic tail-lights only use a single LED light with visibility from the rear but diminished visibility on the sides. Rayo has three LED lights, each with a different purpose. One illuminates the sides while the other two form a tighter beam to be seen better from the rear. Such a system ultimately achieves balanced visibility from the rear and both sides.

Rayo achieves balanced visibility from the rear and sides
Rayo achieves balanced visibility from the rear and sides

Easily Configurable

Most tail-lights have preconfigured flashing modes, and you are stuck with them, forever. Some modes never get used, and the lights may not have the exact pattern you would like. Rayo lets you fully customize the flashing patterns according to your riding conditions. Once configured, you can select the flashing pattern you need, with just a tap at the touch control.

Rayo allows you to customize flashing patterns for your needs
Rayo allows you to customize flashing patterns for your needs


If you have ever shopped for a bicycle tail-light and was disappointed finding that most of them look rather out-of-date, Rayo is just for you. Rayo's award-winning design offers a minimalistic and sleek look and with five distinct colors to match your style.


Our goal with Rayo is to provide safety to cyclists by integrating advanced sensors and communication technologies into an elegant design. As engineers and cyclists, we have spent endless hours designing, developing, and improving Rayo ever since the first sketch. Positive feedback and interest from numerous exhibitions have driven us throughout our course, and we will continuously strive to satisfy our supporters and backers by successfully developing Rayo - the ultimate bicycle tail-light.


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