Compact, aero-post compatible safety light featuring a Daytime Flash mode. Its co-molded construction is super light, yet durable and has an IPX7 waterproof rating. NEW -- Up to 19.5 hours of runtime (6.5 hour increase) with highly improved optics. Its Wide Angle Lens offers up to 270 of visibility. The KTV Drive Pro Rear provides up to 75 lumens (Daytime Flash) and five output/flash modes. And it features an integrated USB stick for convenient cable-free recharging. Also available in pairs.