The Lezyne Strip Pro Ai Alert 400+ is a rear bike light that works as a smart brake light. It detects when you slow down and switches to a rapid 150 lumen Active Alert flash, so drivers and riders behind you know you are braking, a real safety gain in busy traffic and fast group rides.
Ten LEDs and wide-angle optics give 270 degrees of visibility, with 7 modes from a 400 lumen Day Flash to an 80 hour Femto mode. It is IPX7 waterproof, charges over USB-C (cable not included) and mounts to aero or round seatposts with the silicone strap. Lezyne states the Ai Alert does not collect rider data.
Features
Feature
What it does for you
Ai Alert brake light
Detects braking and flashes a 150 lumen Active Alert.
400 lumen Day Flash
Highly visible in daylight traffic.
270 degree visibility
Ten LEDs with wide-angle optics.
Long runtime
Up to 80 hours in Femto mode; 1900 mAh battery.
IPX7 waterproof
Tested for tough weather.
Universal mount
Silicone strap for aero or round seatposts.
Specification
Light
Max output
400 lumens
Brake alert
150 lumen Active Alert flash
LEDs
10
Modes
7
Visibility
270 degrees
Power
Battery
1900 mAh
Max runtime
80 hours (Femto)
Charging
USB-C (cable not included)
Build
Waterproofing
IPX7
Dimensions
70 x 37 x 47 mm
Weight
71 g
Mount
Silicone strap, aero and round seatposts
Shipping and package
Package size (L x W x H)
12 x 8 x 6 cm
Shipping weight
0.2 kg
CUSTOMER REVIEWS
Frequently Asked Questions
How does the Ai Alert brake light work?▼
The light senses deceleration and automatically switches to a rapid 150 lumen flash to signal that you are slowing down.
Is a charging cable included?▼
No. It charges over USB-C, but the cable is not included.
Is it waterproof?▼
Yes, it is tested to IPX7.
Can I ship it outside the UAE?▼
No. It has a built-in rechargeable battery, so it ships within the UAE only.
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