The Lezyne Saddle Ai Alert 250 Rear Light is a premium, saddle-mounted lighting solution designed to maximise visibility while integrating intelligent safety technology. Compact and cleanly integrated beneath the saddle, it delivers powerful illumination without cluttering the bike’s cockpit or seatpost.

At the core of the system is Lezyne’s Ai Alert technology, which automatically detects deceleration and triggers a rapid, high-intensity brake light flash. This feature communicates your speed changes clearly to traffic and other riders, significantly improving safety in both urban and group riding environments.

With a maximum output of 250 lumens and 10 high-output LEDs arranged for optimal light dispersion, the Saddle Ai Alert ensures excellent visibility in both day and night conditions. Wide-angle optics provide up to 270° of visibility, making the rider clearly visible from multiple angles.

Built with a fully CNC-machined aluminium body, the light offers durability, premium finish, and efficient heat management. The dedicated saddle rail mount keeps the light securely positioned and aerodynamically tucked away, ideal for performance road and gravel bikes.

With up to 60 hours of runtime, USB-C charging, and IPX7 waterproofing, the Saddle Ai Alert 250 is designed for real-world riding conditions—combining reliability, smart safety, and a clean integrated design.

Key Features

• Ai Alert brake-sensing technology automatically detects deceleration
• Up to 250 lumens output for strong day and night visibility
• 10 LED array for optimised beam pattern and visibility
• 270° wide-angle visibility for enhanced safety
• Saddle-mounted design for clean integration and aero profile
• Up to 60 hours runtime depending on mode
• 7 lighting modes including Daytime Flash and Alert mode
• CNC-machined aluminium construction for durability
• USB-C rechargeable (cable not included)
• IPX7 waterproof rating for all-weather use

Technical Specifications

• Max output: 250 lumens
• Max runtime: up to 60 hours
• Battery capacity: 1100 mAh
• LED configuration: 10 LEDs
• Charging: USB-C
• Visibility: 270°
• Waterproof rating: IPX7
• Weight: approx. 73g
• Mounting: Saddle rail mount only
• Application: Road / gravel / commuting