Lezyne Strip Drive Pro Alert 400+ Rear Light The Strip Drive Pro Alert 400+ Rear is our most advanced taillight, featuring custom alert technology that automatically adjusts to signal deceleration and stopping, improving communication with traffic and fellow cyclists. With ten LEDs and a maximum output of 400 lumens, it offers optimal light dispersion and efficiency, even in challenging conditions. Its impressive 80-hour max runtime ensures reliability, and seven output modes, including the attention-grabbing Daytime Flash, provide versatile lighting options. Wide-angle optics offer 270° visibility, enhancing safety. Key Features: - Lightweight, durable construction - Tested to IPX7 waterproof standards - Versatile mounting system for aero or round seatposts - USB-C waterproof charging (cable not included) Specifications: - Max Lumens: 400 - Max Runtime: 80 hours - Battery Capacity (mAh): 1900 - Recharge Type: USB-C - Weight: 71g - Dimensions: 70mm, 37mm, 47mm - Features: IPX7, Daytime Flash, Alert This taillight delivers unparalleled visibility, day or night.