X-TIGER Smart Brake Sensing Bicycle Tail Light – Stay Visible, Stay Safe

The X-TIGER WD-1101 Bike Rear Light is an intelligent, USB-C rechargeable LED taillight designed to keep you visible on every ride. With automatic brake sensing, ambient light detection, and a robust IPX6 waterproof rating, this is the tail light that works as hard as you do — rain or shine, day or night.

Key Features

🔴 Smart Brake Sensing: Built-in acceleration sensor detects when you brake and instantly illuminates at maximum brightness for 3 seconds — alerting vehicles and pedestrians behind you automatically.
💡 6 Versatile Light Modes: Choose from Always On, Fast Flashing, Slow Flashing, Rhythmic Flashing, Breathing Flashing, or Energy Saving Flashing to suit any riding condition.
🤖 Auto & Manual Modes: In Auto Mode, the light turns off after 30 seconds of no movement and switches back on when motion is detected. Manual Mode gives you full control. Switch between modes with a single click (Auto) or a 3-second long press (Manual).
🌥️ Ambient Light Sensor: The taillight automatically activates in low-light conditions and switches off in bright environments — no fiddling with buttons required.
🔋 Long-Lasting 420mAh Battery: A built-in Li-ion battery provides up to 9 hours of runtime at maximum brightness. A battery indicator shows remaining charge at a glance.
🌧️ IPX6 Waterproof: Engineered to withstand powerful water jets, this light performs reliably through heavy rain and adverse weather.
⚡ USB-C Charging: Fast, convenient Type-C charging via any USB power source — power bank, laptop, or wall adapter. The included charging cable makes top-ups effortless.
🚴 Seatpost Mount: Comes with adjustable silicone straps and a saddle mounting bracket for tool-free installation on most seat tubes or saddle rails. Lightweight at just 100g.

Specifications

Model	WD-1101
Material	Al-alloy / ABS / PC / PA66
Light Modes	6 Modes
Brightness	46 Lumens
Battery	420mAh Li-ion
Runtime	Up to 9 hours (max brightness)
Charging	USB Type-C
Waterproof Rating	IPX6
Mounting	Seatpost / Saddle Rail
Weight	100g (0.1kg)
Country of Origin	Made in China

How to Use

Auto-Sensing Mode: Press the button once while powering on to activate smart auto mode.
Manual Mode: Long press for 3 seconds while powering on to switch to manual operation.
Charge Check: Press the switch while the light is off to display battery status via the indicator LED.
Charging: Always use the included USB-C cable to charge. Using third-party cables may affect performance.

Perfect For

Commuters, road cyclists, mountain bikers, and casual riders who want a reliable, smart safety light for night riding, low-visibility conditions, and everyday commuting.

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Cycling Safety Resources

For tips on staying safe while riding at night and in low-visibility conditions, visit the U.S. National Highway Traffic Safety Administration or the CPSC Bicycle Safety Center for guidelines on bicycle lighting and road visibility.

Learn more: Corner reflector

Frequently Asked Questions

Q: Does the X-TIGER WD-1101 tail light work in heavy rain?

A: Yes! The X-TIGER bike tail light carries an IPX6 waterproof rating, meaning it is protected against powerful water jets from any direction. You can confidently use it in heavy rain and wet road conditions.

Q: How does the smart brake sensing feature work on this bicycle tail light?

A: The built-in acceleration sensor detects rapid deceleration when you brake. When braking is detected, the taillight immediately switches to maximum brightness for 3 seconds, making your stopping action clearly visible to traffic and pedestrians behind you. This works in both Auto and Manual operating modes.

Q: How long does the battery last and how do I charge the light?

A: The 420mAh Li-ion battery delivers up to 9 hours of runtime at maximum brightness. Charging is done via the included USB-C cable — simply plug it into any USB power source such as a power bank, laptop, or wall adapter. Press the power button while the light is off to check the remaining battery level via the indicator.

Q: How do I mount the X-TIGER tail light on my bike?

A: The taillight includes adjustable silicone straps and a saddle mounting bracket, making it compatible with most standard seatposts and saddle rails. Installation requires no tools and takes just seconds. It is designed for seatpost or saddle rail placement for optimal rear visibility.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.