Lezyne Light Rear Saddle Alert Ai 250

The Lezyne Saddle Ai Alert 250 Rear Light is a next-generation cycling tail light designed to actively improve rider safety with intelligent technology. Mounted neatly under your saddle, it combines a powerful 250-lumen output with AI-driven brake sensing, helping you communicate more clearly with traffic and other riders.

Its standout Ai Alert technology automatically detects when you slow down and triggers a rapid, high-intensity flash—effectively acting like a brake light for your bike. This smart feature enhances visibility and awareness, especially in busy urban environments or fast group rides.

With 10 high-output LEDs and Wide Angle Optics, the light delivers up to 270° of visibility, ensuring you’re seen from multiple directions. The saddle-mounted design keeps your cockpit and seatpost clean while offering a secure, aerodynamic fit.

Built from CNC-machined aluminium and rated IPX7 waterproof, it’s engineered to handle harsh weather and long rides. A USB-C rechargeable battery provides up to 60 hours runtime in low modes, making it ideal for both daily commuting and endurance riding.

Key Benefits

Ai Alert brake-sensing technology – Automatically signals when you slow down for added safety
250 lumen high-visibility output – Daytime Flash and powerful modes improve visibility
270° wide-angle beam – Enhanced side visibility in traffic
Saddle-mounted design – Clean, aerodynamic setup with secure fit
USB-C rechargeable + long runtime – Up to 60 hours depending on mode

Who Is This Best Suited For?

The Lezyne Saddle Ai Alert 250 is ideal for road cyclists, commuters, and gravel riders who want a high-visibility rear light with smart brake-alert technology and a clean saddle-mounted setup.

Product Specifications

Brand: Lezyne
Model: Saddle Ai Alert 250 Rear
Max Output: 250 lumens
Max Runtime: Up to 60 hours
Battery Capacity: 1100 mAh
Charging: USB-C rechargeable
Modes: 7 (including Day Flash & Alert mode)
LEDs: 10 high-output LEDs
Visibility: 270° wide-angle optics
Waterproof Rating: IPX7
Weight: Approx. 73 g
Mounting: Saddle rail mount only