Nederland
Belgium (English)
Deutschland
Finland
Ireland
Luxembourg
Portugal
Poland
Österreich
France
España
Italia
Sverige
Danmark
Lezyne KTV Pro+ Ai Alert Rear Rear Bike Light
Lezyne KTV Pro+ Ai Alert Rear Rear Bike Light
6 reviews
29,95
24,95
5,- discount
- Free tracked shipping over € 49,-
Does this page help you make your choice?
Ask a question about this product
Try in store
Available directly in-store, or order online.
Pros & Cons
Pros & Cons
- Multi-functional rear light with 270 degrees of visibility, as well as constant and flashing light modes including daytime running lights to enhance your safety.
- Lights up brighter when it detects deceleration, to warn others on the road.
- IPX7 waterproofing rating, so it won't have any trouble in heavy rain or when dropped in water.
- Can be charged without a cable thanks to the integrated USB stick.
- Fits round as well as aerodynamic seatposts.
- Keep in mind that, when used in the dark, the daytime running light mode can blind others on the road.
Specifications
Specifications
| Brand | Lezyne | |
| Light Output in Lumen | 150 lumen | |
| USB rechargeable | Yes, USB-A | |
| Compatibility | None | |
| Max. Battery Life highest mode | Over 10 hours | |
| Max. battery Life lowest mode | 16 to 30 hours | |
| Flashing Mode | Yes | |
| Lateral visibility | Better | |
| Brake light feature | Yes |
The Lezyne KTV Pro+ Ai Alert rear light comes with innovative brake light technology, known as Ai Alert. The Lezyne KTV Pro+ Ai Alert bike light automatically detects when you slow down, and warns traffic coming up from behind by becoming brighter. This lightweight bike light is durably constructed with 270° visibility. It comes with 6 light modes, both constant and flashing modes, and is equipped with extra bright LEDs. Its day time running mode produces 150 lumens for up to 10.5 hours, to maximise your day time safety.
In FEMTO mode, this light produces light for an impressive 20 hours. It's been thoroughly tested on the IPX7 waterproofing standards to guarantee functionality in the toughest weather conditions. The light has a battery capacity of 400 mAh, and can conveniently be charged using the integrated USB stick. Attach it to round or aero seatposts using the versatile, silicone rubber elastic band.
In FEMTO mode, this light produces light for an impressive 20 hours. It's been thoroughly tested on the IPX7 waterproofing standards to guarantee functionality in the toughest weather conditions. The light has a battery capacity of 400 mAh, and can conveniently be charged using the integrated USB stick. Attach it to round or aero seatposts using the versatile, silicone rubber elastic band.
Lezyne KTV Pro+ Ai Alert
Modes - continous:
• Blast (50 lumens - 2 hours)
• Economy (10 lumens - 9 hours)
Modes - flashing:
• Pulse (50 lumens - 4 hours)
• Flash 1 (25 lumens - 18 hours)
• Day Flash (150 lumens - 10.5 hours)
• Femto (5 lumens - 20 hours)
• Active Alert (150 lumens)
Modes - continous:
• Blast (50 lumens - 2 hours)
• Economy (10 lumens - 9 hours)
Modes - flashing:
• Pulse (50 lumens - 4 hours)
• Flash 1 (25 lumens - 18 hours)
• Day Flash (150 lumens - 10.5 hours)
• Femto (5 lumens - 20 hours)
• Active Alert (150 lumens)
• Advanced rear light with so-called "Ai Alert" brake detection technology
• Detects it when you slow down, and then burns brighter to warn others on the road.
• Max. 150 lumens or 20 hours of runtime in Femto mode.
• 6 combined constant and flashing modes, including daytime running lights.
• 270° visibility.
• Versatile silicone rubber mounting elastic included.
• Compatible with both aerodynamic and round seatposts.
• Integrated USB stick for charging without a cable.
• IPX7 waterproofing.
• Battery capacity: 400 mAh.
• Colour: Black.
• Weight: 50 grams.
• Detects it when you slow down, and then burns brighter to warn others on the road.
• Max. 150 lumens or 20 hours of runtime in Femto mode.
• 6 combined constant and flashing modes, including daytime running lights.
• 270° visibility.
• Versatile silicone rubber mounting elastic included.
• Compatible with both aerodynamic and round seatposts.
• Integrated USB stick for charging without a cable.
• IPX7 waterproofing.
• Battery capacity: 400 mAh.
• Colour: Black.
• Weight: 50 grams.
Bike lights buying guide 2023-2024 - Hit the road safely!
Read moreReviews
Reviews
Most recent reviews
5 / 5
Highly visible rear light
- Gerrit-Jan 21 July 2026
Easy to fit to the seat tube of a gravel or road bike
Pros & Cons
Excellent visibility to traffic approaching from behind.
Long-lasting light.
Automatic translation
4 / 5
The light gives a good signal at a reasonable price.
- Joep 3 May 2026
Loading is not easy but it meets my expectations.
Pros & Cons
Gives good light
Charging is not easy
Automatic translation
5 / 5
Highly visible
- Els 25 September 2025
Top lighting and easy to charge
Automatic translation
5 / 5
Alless i.O. gladly again.
- Steve 19 September 2025
Alless i.O. gladly again
Automatic translation
5 / 5
Gladly again
- Rabea 6 September 2025
Great product and really super bright. As I work shifts and my route to work also takes me along a country lane, I do at least one journey in the dark. Great for being seen. The delivery was also very fast.
Automatic translation
Frequently bought together
Frequently bought together
Recommended by the product specialist
Recommended by the product specialist
Related product
Related product
Compare the products above
|
|
|
| Lezyne KTV Pro+ Ai Alert Rear | Ravemen NT201 Radar | |
| 6 reviews | 3 reviews | |
| Light Output in Lumen | 150 lumen | Being seen in urban environment: 0 - 100 lumen |
| USB rechargeable | Yes, USB-A | Yes, USB-A |
| Compatibility | None | Bluetooth/ANT+ |
| Max. Battery Life highest mode | Over 10 hours | 8 hours |
| Max. battery Life lowest mode | 16 to 30 hours | 16 hours |
| Flashing Mode | Yes | Yes |
| 24,95 | 85,95 | |
| This product | View product |
All specifications
General
Brand
Lezyne
Compatibility
None
Lateral visibility
Better
Radar feature
No radar function
Mounting location
Seatpost
Colour
Black
Weight
50 grams
Light Type
Detachable light
Mount(s)
Elastic Band / Strap
Power supply
USB rechargeable
Yes, USB-A
Max. Battery Life highest mode
Over 10 hours
Max. battery Life lowest mode
16 to 30 hours
Power Source
Internal Battery
Properties
Battery indicator
LED
Connectivity
Connector plug
USB
Functions
Flashing Mode
Yes
Brake light feature
Yes
Daytime running lights
Yes
Number of Modes
6
Smart Bike Light
No
Lighting
Light Output in Lumen
150 lumen
Water resistance
IPX7: immersion-proof
Amount of lumen
150
Certifications
StVZO certification
No