The KTV Drive Pro Rear is a compact aero post compatible bike light providing up to 75 lumens and five output modes. It offers up to 19. 5 hours of max runtime as well as a visibility-focused Daytime Flash mode. Its co-molded construction is super light durable and holds an IPX7 waterproof rating. The light utilizes our Wide Angle Optics lens design to provide 270 of visibility and an integrated USB stick allows convenient cable-free recharging.