ROCKBROS Bicycle Tail Light with Magnetic Smart Brake Rear Light: Magnetic smart brake detection
Available Options
This bike light knows when you're stopping—and it gets brighter to tell everyone else. The ROCKBROS Bicycle Tail Light packs a magnetic brake sensor that amps up its glow as you slow down, a clever trick for dodging rear-enders in traffic. With seven light modes, from a steady beam to frantic flashes, it adapts to any scenario, whether you're weaving through city chaos or pedaling down a pitch-black country lane.
Rated IPX6 waterproof, it laughs off rain and splashes, so a sudden downpour won't leave you in the dark. Battery life stretches up to 36 hours on a charge, perfect for long hauls without hunting for an outlet. The magnetic mount snaps on and off in seconds, making it a no-brainer for commuters, fitness buffs, or anyone who values safety without the fuss. Durable, smart, and downright handy—it's the kind of gear that makes cycling just a bit safer and a lot smoother.
- 7 light modes for visibility
- 36 hours continuous battery life
- IPX6 waterproof rating
- Easy installation for road use
- Magnetic smart brake detection
General specs
- Brand: ROCKBROS
- Seller: Joom
- Light Modes: 7 modes
- Battery Life: 36 hours continuous
- Waterproof Rating: IPX6
- Installation Type: Magnetic
- Usage: Road, cross, day and night, school
- First listed by seller: 8/29/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Bicycle Tail Light with Magnetic Smart Brake Rear Light Magnetic smart brake detection
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Bicycle Tail Rear Smart Brake Light with Vibration and LED Lighting Smart brake light activation
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Bicycle Tail Smart Brake Light Smart brake detection
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Automatic Smart Brake Rear Light Automatic brake light activation
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Smart Bicycle Rear Light Brake sensor
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Smart Rear Bicycle Light Smart brake sensor
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| Brand | ROCKBROS | ROCKBROS | CYCLAMI | ROCKBROS | TOMTOP JMS | Sturdy equipment |
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| Price | $47.78 | $51.15 | $43.94 | $47.61 | $21.57 | $21.15 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 29, 2025 | August 28, 2025 | August 31, 2025 | September 2, 2025 | August 29, 2025 | August 20, 2025 |
| Waterproof Rating | IPX6 | IPX6 | IPX6 | IPX6 | Waterproof | |
| Power Source | USB rechargeable | USB rechargeable battery | Rechargeable battery | |||
Bicycle Tail Light with Magnetic Smart Brake Rear Light
Andrew B.
Philadelphia, PA
September 10, 2025
I bought this as a gift for my partner who cycles a lot, thinking it would be a smart safety upgrade. In reality, it works pretty well overall. It does what it says by lighting up more when you brake, and the battery life is impressive for long rides. But I wish it was simpler to use right out of the box; it took me some time to get used to the modes. Still, for the price and how handy it is, it's a good buy that adds peace of mind on the road :)
- Pros: I liked that it gets brighter when I slow down, which feels safer in traffic. The battery lasts a long time, so I don't have to charge it often, and it stays on even in the rain without any issues. The way it attaches with a magnet makes it super easy to put on and take off, which is great for my daily commute.
- Cons: It seemed too complicated with all the different light settings—I had to fiddle with it a bit to figure them out, which wasn't grandma-proof. Sometimes the brightness change when stopping felt a bit delayed, not instant as I expected.