Front:A powerful, multi-purpose front light with up to 1000 lumens of output. Its machined aluminium body with cooling fins is lightweight and super rugged. It features eight output modes, with a class-leading 1000 lumen Daytime Flash mode. With its MOR (Maximum Optical Reflection) lens, light output is optimized and evenly dispersed. Battery runtime has increased by 11 hours for up to 87 hours of runtime. And its versatile strap securely mounts to a variety of bar shapes and sizes. Remote Switch compatible.Key Features:Front,Max Lumens: 1000 ,Weight: 153g ,Max Runtime: 87 hours ,Recharge Time: 4 hours.Rear: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. NEW -- 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:Rear,Max Lumens: 75,Weight: 45g,Max Runtime: 19:30 hours,Recharge Time: 3 hours.