• Max 40 Lumen / 17:00-hour max runtime • StVZO-Optimized lens with 10 LEDs. (German regulation) • Advanced taillight with “Ai Alert” brake sensing technology • Detects deceleration and emits a bright light, alerting others that you’re slowing down • 2 solid modes • 40 lumens Blast mode, 20 lumens Economy mode • Wide angle optics with 270° built-in side visibility • USB-C waterproof charging (cable not included) • Durable, lightweight co-molded body • Aero and round seatpost compatible • Includes versatile silicone rubber mounting strap • Rigorously tested to IPX7 Waterproofing standards • 1900 mAh battery capacity