Smart Brake Sensing Rear Bike Light – USB Rechargeable Waterproof Tail Light for Night Riding
Once shipped, products will be delivered within 5 to 8 business days.
You can return it to us within 30 days without giving any reason.
Manual and Smart Modes
Manual Mode
Long press the power button for 0.5 seconds to turn on in manual mode.
In manual mode, brake sensing and smart on/off functions are not available.
Smart Mode (GL09S / GL09S RGB)
Double-click the power button to turn on in smart mode.
In smart mode, brake sensing and smart on/off functions are enabled.
Smart Brake Sensing – Safety in Every Stop
Equipped with a high-precision intelligent sensor chip, the GL09S accurately detects braking actions during your ride. When deceleration is detected, the taillight automatically brightens for 3 seconds, clearly signaling to vehicles behind and greatly enhancing riding safety at night.
Reliable in Any Weather – IP66 Waterproof
Built with an IP66-rated waterproof design, the GL09S can handle rainy rides, splashes, and dust with ease.
Whether you’re cycling through a light drizzle or a sudden downpour, it stays fully operational, ensuring consistent performance and safety in all weather conditions.
7 Dynamic RGB Modes – Ride with Style and Safety
The GL09-RGB/GL09S-RGB features 7 vibrant RGB lighting modes, including flashing, breathing, and color-cycling effects,
which play in a smooth looping sequence for maximum visibility and visual appeal.
From steady red to dazzling rainbow effects, each mode helps you stand out in traffic and stay safe during night rides.
Fast Charging, Long Endurance – Ride Without Limits
The GL09S supports Type-C fast charging, requiring only 2 hours for a full charge.
With a powerful 400mAh battery, it offers an impressive runtime of 20 to 100 hours, depending on the lighting mode.
A single tap of the button while powered off activates the battery level indicator:
🟢 Green – Above 80%
🔵 Blue – 30% to 80%
🔴 Red – Below 30%
No more guesswork – know your battery level at a glance and ride with confidence.
| Feature | GL09 | GL09S | GL09-RGB | GL09S-RGB |
|---|---|---|---|---|
| Lighting Modes | 6 Modes | 6 Modes | 6 Modes | 6 Modes |
| Smart Mode | ❌ | ✅ | ❌ | ✅ |
| Brake Sensing | ❌ | ✅ | ❌ | ✅ |
| Light Color | Red | Red | RGB | RGB |
| Battery Life | 10H–100H | 12H–60H | 6.5H–70H | 9.5H–90H |
| Battery Capacity | 250mAh | 400mAh | 250mAh | 400mAh |
| Charging Input | 5V–0.2A | 5V–0.28A | 5V–0.2A | 5V–0.28A |
Customer Reviews
i have rode my bicycle across the uk and know bike stuff well and this is new for me to recommend something new. this does what i want and i like and recommend it for more people. its intuitive and light weight. its easy to remove from your bike which is good because thats the beat way to prevent theft - bring it with you. and you need this, increasingly is a legal requirement to have a light like this ready to go and having been hit by cars i cant recommend this enough.
i would prefer if the autooff / manual mode were a bit more intuitive - easy to forget which you are on.
overall great experience so far and i like it.
Lasts a long time and is pretty bright. Easy to take off to recharge and uses a usb-c charger. There are brighter ones but for the size, price and convenience I am very happy with it.
Great visibility, and I love the smart sensor that brightens the light as I slow down
I always break rear light or they don't have good build quality, I seem to go through loads. This seems well built, with good battery life. I've got it fastened to my under saddle bag. Seems secure too.
What it is: USB-C LED bike tail light. Includes USB to USB-C cable, plastic IP66 waterproof LED light with built in saddle bag clip, seatpost clip with silicon band, seat rail clip, zip ties, foam pads, and multi-lingual instructions.
Why I like it: As an avid cyclist, staying visible improves safetybright clothes and LED headlights and taillights really help. This compact LED is lightweight, waterproof, and has a run time of up to 60 hrs in eco flash mode. It has 6 different flash modes for day and night riding, as well as a smart mode. Smart mode has the same 6 flash modes, and activates the auto brake light feature and auto on/off/sleep modes. I also really like that it contains clips, silicon strap, and zip ties for just about any installation scenario. Looking forward to putting this to use this season!
I like that this light is bright and is easy to install. It is also very compact. However, the standout feature is the brake sensing that make the light brighter. I mounted it on my handlebars to see how well it works and it was consistently reliablebetter than I thought. This is a really great feature as cars are used to slowing down when brake lights go onso this gives a familiar indicator. I think these up the safety factor of the back light. Thumbs up.
Very useful, will definitely repurchase!
A great, easy to use little light. Charges in no time at all and provides a VERY bright light - which seems to last forever. This also has plenty of options for lighting effects too e.g. on solid, flash, intermittent etc.
Great light. Recommended.
Works as expected.
The tail light works great and feels premium. Its bright enough and can be mounted on the bike frame or saddle bag, making it versatile for different situations.
