Lezyne Strip Pro Ai Alert 400+ Rear Bike Light
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- Trustpilot rating 4.7/5
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Pros & Cons
Pros & Cons
- Premium, highly visible rear bike light combined with advanced AI Alert technology for maximum safety.
- Optimal light distribution, even in the darkest places, during the day or in the worst, foggy conditions.
- Up to 400 lumens of light output in Day Flash mode, plus an impressive 80 hour runtime in FEMTO mode.
- Extensively tested according to the IPX7 waterproofing norms, to guarantee functionality in bad weather conditions.
- Wide-angle optics for 270° degrees of visibility, and a total of seven regular and flashing modes.
- Charging cable not included.
Specifications
Specifications
Brand
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Lezyne |
Being seen in limited lighted environment: 100 - 400 lumen | |
Yes, USB-C | |
Compatibility
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None |
5,5 hours | |
80 hours | |
Yes | |
Best | |
Yes |
This light has an impressive 80 hour battery life in FEMTO mode and can produce a light output of up to 400 lumens in Day Flash mode. Its versatile, silicone rubber mounting strap can be attached to aero and round seatposts alike. It was extensively tested according to IPX7 waterproofing standards, in order to guarantee functionality in even the worst weather conditions. This bike light also comes with a 1900 mAh battery capacity, and can be charged in a waterproof way using USB-C (cable not included).
Economy (15 lumens - 26 hours)
Ideal for: daily city rides, when you need just a little bit of extra light.
What you'll get: modest light output, long battery life.
Blast (80 lumens - 5.5 hours)
What you'll get: an impressive light boost, and an average battery life.
Pulse (80 lumens - 14 hours)
Ideal for: rides in the dark, when you want to stand out without constant bright light
What you'll get: a pulsing light that stands out without blinding anyone.
Flash 1 (50 lumens - 21 hours)
Ideal for: being visible in the dark without disrupting your environment too much.
What you'll get: a regular flash to subtly stand out in traffic.
Day Flash 1 (200 lumens - 30 hours)
Ideal for: being visible in daylight, especially in cloudy conditions.
What you'll get: bright flashes that stand out during the day, with an excellent battery life.
Day Flash 2 (400 lumens - 18 hours)
Ideal for: maximum visibility during the day and in sunny conditions.
What you'll get: very bright flashes that are even visible in bright daylight.
Femto (5 lumens - 80 hours)
Ideal for: minimal light and a maximum battery life, for long tours.
What you'll get: a soft, continuous light that's just enough to be seen with, without affecting your night vision.
Introducing the future of bike light technology: AI Alert. Lezyne combines artificial intelligence with advanced ALERT rear lights to produce the most precise cycling brake light on the market. This light automatically detects braking events, and intelligently changes its output mode to Active Alert: a fast, flashing 150-lumen "brake light" mode. It signals slowing down, effectively communicating your actions to motorists and other cyclists, which increases your visibility and safety.
IPX7 waterproofing
Submersion tolerance: this light can be submerged for up to 30 minutes, up to a depth of 1 meter. Do make sure you close the charging port well! Heading for a bike ride when rain has been predicted? No problem! An IPX7 rating indicates your light can handle a heavy rain shower and will get you home safe, even when the weather turns bad.
• Intelligently detects deceleration, and changes its output mode to warn others that you're slowing down
• Max 400 lumens, or up to 80 hours runtime in FEMTO mode
• A total of seven regular and flashing modes, including a highly disruptive daytime flashing mode
• Lightweight, durable co-moulded design
• Wide angle optics for 270 degrees of visibility
• Compatible with aerodynamic and round seatposts
• Includes a versatile, rubber silicone mounting strap
• Charging via USB-C (cable not included)
• Extensively tested according to IPX7 waterproofing norms
• 1900 mAh battery capacity
• Colour: black
• Weight: 71 grams
Reviews
Reviews
5 / 5
Top tail light from Leyzyne. Buy it? Yes.
Nice rear light. Does its job well afternoon and dark thanks to multiple modes. Ai Alert system is top notch. 400+ is more than enough for me, though shrill in the evening.
Pros & Cons
5 / 5
Great rear light with blinding output
Great rear light with blinding output. Not too expensive, easy to mount and lots of options. Only quite big, but that's not really an issue.
Pros & Cons
4 / 5
Much better than the previous version
I had the previous version and it was actually not that great: it ran out of power after 2 hours on most modes. This one is much better. Better visibility and better battery life. One drawback: the previous one had a longer mounting rubber with a handy tab. This is very tight on a thick aero seatpost and it is hard to get it on/off because there is no tab.
Pros & Cons
5 / 5
Good bright rear light for `night and possibly daytime use
Very good rear light that exactly meets my expectations. Especially a safe and bright lamp when cycling down a polder road in the dark at night! Good value for money
Pros & Cons
5
Top tail light from Leyzyne. Buy it? Yes.
Nice rear light. Does its job well afternoon and dark thanks to multiple modes. Ai Alert system is top notch. 400+ is more than enough for me, though shrill in the evening.
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Ai Alert system
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Large number of light modes
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Shrill, especially in the evening
5
Great rear light with blinding output
Great rear light with blinding output. Not too expensive, easy to mount and lots of options. Only quite big, but that's not really an issue.
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Easy to mount
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Lasts a long time on a charge
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Lots (lots!) of light output
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Quite large
4
Much better than the previous version
I had the previous version and it was actually not that great: it ran out of power after 2 hours on most modes. This one is much better. Better visibility and better battery life. One drawback: the previous one had a longer mounting rubber with a handy tab. This is very tight on a thick aero seatpost and it is hard to get it on/off because there is no tab.
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Fierce when it needs to be
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Good battery life
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Good visibility, even from the side
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Mounting rubber is a bit short and no tab
5
Good bright rear light for `night and possibly daytime use
Very good rear light that exactly meets my expectations. Especially a safe and bright lamp when cycling down a polder road in the dark at night! Good value for money
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bright
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can also be used during the day
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rechargeable
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not yet found
Recommended by the product specialist
Recommended by the product specialist
Related products
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Lezyne Strip Pro Ai Alert 400+ | Ravemen NT101 | Lezyne Strip Drive Pro 400+ | Lezyne Saddle Ai Alert 250 Rear | |
4 reviews | 0 reviews | 13 reviews | 4 reviews | |
Light Output in Lumen | Being seen in limited lighted environment: 100 - 400 lumen | Being seen in limited lighted environment: 100 - 400 lumen | Being seen in limited lighted environment: 100 - 400 lumen | Being seen in limited lighted environment: 100 - 400 lumen |
USB rechargeable | Yes, USB-C | Yes, USB-C | Yes, USB-C | Yes, USB-C |
Compatibility | None | None | None | Yes, with Lezyne Smart Connect app |
Max. Battery Life highest mode | 5,5 hours | 4.5 to 7 hours | 5,5 hours | 15 hours |
Max. battery Life lowest mode | 80 hours | 16 to 30 hours | 80 hours | 60 hours |
Flashing Mode | Yes | Yes | Yes | Yes |
51,81 | 51,81 | 51,81 | 62,18 | |
This product | View product | View product | View product |