Lezyne Ai Alert 250 rear bike light, saddle mount

Ai Alert technology combines artificial intelligence with advanced rear lights to provide precise bike lighting. The system automatically detects braking and switches to "Active Alert" mode, a rapid 250-lumen flash, signalling deceleration to improve safety. This system is pre-programmed by artificial intelligence.

The Lezyne Ai Alert 250 is a saddle-mounted rear light, featuring 10 ultra-bright LEDs for optimal illumination in challenging conditions. It offers 7 output modes, including a highly visible daytime flash and an impressive 60-hour battery life in Femto mode. Its CNC-machined aluminium construction and wide-angle optics ensure 270° visibility. Tested to IPX7 standard, it is designed to withstand the elements and features a 1100 mAh battery. USB-C charging is easy thanks to the light’s quick-release mount.

Technical specifications

- Rear LED bike light
- Compact and lightweight
- Mounts on the seat post, higher position for greater visibility
- Ai Alert technology: Brake detection, deceleration alert
- Brightness: 250 lumens
- Battery life: 60 hours
- Lighting modes: 7 modes, including daytime flash
- Robust construction: Machined aluminium
- 270° visibility: Wide-angle lens
- USB-C charging: Convenient charging, cable not included
- Water resistance: IPX7 standard, water-resistant
- Battery: 1100 mAh
- Weight: 73g
- Brand: Lezyne