Everything about this bike light makes city riding safer, more convenient, and more enjoyable. The range of lighting outputs and modes helps you spot and avoid frequent urban obstacles, from potholes and curbs to train tracks and trash. It also makes you more visible to city drivers, including those approaching you from the right or left at intersections. And because city rides often involve pit stops indoors, the easily detachable light makes theft-prevention simple.

 

 

 

When you gain speed, the Radius™ F1 light brightens; when you slow down, it dims—and it shifts at the same rate you change speed. This ensures your visibility is always optimal for your speed, and it helps save battery power.

 

RightBright™ technology incorporates:

BMI 160, a small, quiet, energy-efficient inertial measurement device that precisely senses your velocity;

"Stepless" speed-controlled beam intensity that adapts light output to your cycling speed by smoothly shifting intensity over a range of lumens.

 

In addition to auto-adjusting brightness, SecurePulse™ technology automatically switches into a safety-enhancing pulse mode when you’re turning a corner and flashes when you’re braking to a stop, because riding at slower speeds can make you less visible to drivers.

  

After three minutes of no movement, the light’s PerfectPower™ functionality automatically switches the light to standby mode. Start moving the bike again and the light will wake up and return to default speed-controlled lighting. After 1 hour of bike inactivity, the light’s power shuts off to consume extremely low energy—because nothing is worse than accidentally leaving your light on all night and discovering it’s dead when you set off on your next ride.

 

 

 

 

 

 

 

Strap this low-profile remote control near your grip tape, and you can manually adjust your light settings without having to take your hands off the handlebars. Rely on the light’s auto-adjustment functionality for the majority of your riding, but have instant control over personal lighting preferences whenever you want it. What's more, it's easy to detach the remote control switch from its bracket.

 

 

 

 

Hundreds of micro lenses in combination with a reflector generate consistent illumination over both distant and close-up terrain: spot lighting hits further ahead so you’re always prepared for upcoming obstacles; flood lighting illuminates a wider area in front of your bike for superior visibility of pedestrians, parked cars, and other nighttime periphery; and side lights help motorists spot you from multiple angles—not just head-on.

 

 

The Radius™ F1 is easy to attach to and release from your handlebars. The bracket can be mounted to the left, right, or center of the stem, and it leaves plenty of room on your handlebars for other bike accessories (including the Radius™ F1 Bluetooth-enabled remote control). The mount and casing firmly secure the bike light for stability and super-steady lighting without jiggling, slipping, or rotation, even on rough roads.

When you want to remove the light, the bracket stays on your bike; simply disengage the lock with a 90-degree turn, and the light disconnects from the bracket—pop it off to charge it or to prevent theft if you head inside.

 

 

 

No dirt infiltration, no inroads for water, no damaged USB ports—simply snap the magnet-equipped charger to the light and recharge.

   

Always know how much life your light has left, thanks to an easy-to-read display on top of the casing. At full brightness the Radius™ F1 has 2 hours of luminosity.

 

 

 

 

  

 

Thanks to precision CNC aluminum machining, the Radius™ F1 provides excellent lighting accuracy and heat transfer. This smart bike light features the highest-grade materials, undergoes only best-in-class manufacturing processes, and meets the highest quality standards, virtually alleviating the need for repairs or part replacements.

 

 

 

Engineered for both aesthetic excellence and technological performance, the Radius™ F1 bike light is modern and minimalist. The sleek aluminum heat sink embraces the low-profile lens-reflector combination with no visible wires or connectors to detract from the light’s clean lines and shape, and the light’s neutral color scheme complements any bike setup.

 

 

The Radius™ F1 was constructed with rainy rides in mind—it's IPX6-rated waterproof construction ensures you’ll have long-lasting light, even in the nastiest weather and on the dirtiest roads. It’s also impact-resistant from up to 1m, because drops and spills happen to everyone.

  

 

 

 

 

 

  

What modes does Radius™ F1 have?

Radius™ F1 650: High(650 lumens), Med(350 lumens), Low(200 lumens), Pulse(300&600 lumens), Flash(600 lumens), Auto Mode.

Radius™ F1 450: High(450 lumens), Med(300 lumens), Low(200 lumens), Pulse(250&450 lumens), Flash(450 lumens), Auto Mode.

 

How long will the battery last in high brightness?

Both versions can run up to 2 hours in high brightness.

 

Can I charge Radius F1 and use it at the same time?

Yes, you can charge it when using it.

 

What kind of battery does Radius™ F1 use?

Both versions use a 18650 Lithium-ion battery with an LG cell.

 

Does Radius F1’s auto function have to work with a bike computer?

No, no technology integrations are required. The Radius™ F1 has a speed sensor that dictates how much light to output.

 

Can I feel the obvious brightness change when riding with auto mode?

No, Radius™ F1 is designed to imperceptibly change brightness with speeds so that the rider does not get distracted. With step-less speed-controlled light output technology the Radius™ F1 transitions between dim and bright seamlessly, with no jarring shifts in light output. Unlike other speed-controlled bike lights jump between two or three preset light levels, which can be distracting and irritating, especially when your ride involves frequent speed changes (e.g. most urban cycling).

 

How fast do I need to ride to get the highest brightness in the auto mode?

In the auto mode, Radius™ F1 adapts light output to your cycling speed by smoothly shifting beam intensity over a range of lumens. When you ride at or over 15mph, it will reach the highest brightness.

 

Can I adjust the brightness manually?

Yes, you can switch between manual mode and auto mode by double clicking the power button. Rely on the light’s auto-adjustment functionality for the majority of your riding, but have instant control over personal lighting preferences whenever you want it.

 

Can it work in rainstorms?

The Radius™ F1 was constructed with rainy rides in mind. Its IPX6-rated waterproof construction ensures you’ll have long-lasting light, even in the nastiest weather.

 

Is there a low battery indicator?

Yes, when battery power is low in using, the battery indicator will blink 3 times quickly every minute.

 

Can I use my laptop to charge it?

Yes, the charging cable of Radius™ F1 comes with a standard USB connector. It compatible with any USB power source.

 

Can I use other charging cables instead of yours?

No, Radius™ F1 uses customized magnetic charging cable. No dirt infiltration, no inroads for water and no damaged USB ports.

 

How long does it take to fully charge the light?

Radius™ F1 650: It takes 4 hours to charge the light to full capacity.

Radius™ F1 450: It takes 3 hours to charge the light to full capacity.

 

Is the remote control a separate purchase?

Yes, the remote control is sold separately because not every rider needs or wants the remote.

 

How does the bluetooth remote control work?

Pair the remote control with Radius™ F1 before first use. Strap this low-profile remote control near your grip tape, and you can manually adjust your light settings without having to take your hands off the handlebars.

 

What size of handlebars does Radius™ F1 apply to?

Application diameter: 25.4mm (1 in) and 31.8mm (1.25 in)

 

Can I easily detach the light from the unit?

Yes, when you want to remove the light, the bracket stays on your bike; simply disengage the lock with a 90-degree turn, and the light disconnects from the bracket—pop it off to charge it or to prevent theft if you head inside.

 

What is the Warranty?

We provide 30-day no-hassle return and lifetime limited warranty.

 

How much is shipping and handling?

Shipping and handling, packing and fulfilling orders will cost:

FREE in the United States (including Hawaii, Puerto Rico, Alaska)

$15 for International Order