Compact, aero-post compatible safety light featuring a Daytime Flash mode. Its co-moulded construction is super light, yet durable and has an IPX7 waterproof rating. Up to 19.5 hours of runtime (6.5-hour increase) with highly improved optics. Its Wide Angle Lens offers over 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.Key Features:KTV Pro Drive,Max Lumens: 75.,Weight: 45g.,Max Runtime: 19.5 hours.,Recharge Time: 3 hours..