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Motion-Sensing Bike Tail Light with Auto Brake Alert – Rechargeable Rear Safety LED for Road & Mountain Bikes | Thomler
Stay Seen and Stay Safe with Intelligent Brake Detection
Riding at dusk or in traffic means every second of visibility counts. This rechargeable bicycle tail light doesn't just glow—it responds. An integrated motion sensor detects when you slow down or brake, automatically flashing brighter to alert drivers behind you. Six customizable light modes adapt to your route, whether you're commuting downtown, pedaling country roads after dark, or caught in a sudden downpour. The USB-C charging port features a protective dust cover to keep moisture out, and the IP66 weatherproof rating ensures reliability through rain, mud, and spray. This isn't a basic tail light—it's a proactive safety companion designed for serious cyclists who refuse to blend into the background.
Why You Need This
- Automatic Brake Alert: Built-in sensor flares the light brighter the moment you decelerate, giving cars extra warning time.
- Auto Start/Stop: Wakes on motion and sleeps when stationary, conserving battery without you lifting a finger.
- Six Light Modes: Choose steady beam, breathing pulse, slow flash, rhythmic blink, rapid strobe, or ultra-efficient eco mode for any condition.
- Mode Memory: Powers on in the last setting you used, so you're never fumbling through cycles mid-ride.
- 360° LED Array: Circular lens layout radiates light in all directions, ensuring drivers spot you from multiple angles.
- Fast USB-C Charging: Full recharge in two hours; runtime stretches from six hours on high to fifty hours in eco mode.
Built to Perform Every Single Day
Compact and featherlight, this tail light mounts quickly to any seatpost—road bike, mountain bike, e-bike, or city cruiser. The tough ABS and polycarbonate shell stands up to bumps and weather, while the sealed USB-C port (just close the cover snugly) keeps rain and grit out. Whether you're hustling through morning fog or racing home after sunset, you'll ride with confidence knowing drivers see you early and clearly. And because we believe every cyclist deserves worry-free gear, this light ships with free US shipping and a 30-day return window—no stress, just safer miles ahead.
Free shipping across the United States — always, with no minimum order.
Every order is carefully packed and sent with Track & Trace, so you can follow your package every step of the way.
Order today? We ship the next business day.
Not completely happy? You have 30 days to return your purchase.
On top of that, we offer a 3-year warranty against manufacturing defects — your investment is in good hands.
Made for everyday
Practical pieces you’ll actually use.
Quality first
Chosen for quality you can feel.
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Yours, the moment we pack it
- Hand-packed with care
- Checked before it ships
- Arrives exactly as pictured
Straight From Your Camera Roll
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A Note From Our Founder
When I started Thomler, I wanted one thing — to make it easy to find pieces that actually make a home feel like yours, without the markup. Every item we carry is one I'd happily put in my own home. And if it's ever not right, you've got 30 days to send it back, no stress. I'm only ever an email away.