The Lezyne KTV Drive/KTV Pro Smart Light Set is a compact, cycling safety set. Designed to be lightweight and durable.The KTV Drive Front light is a cycling safety light with two bright LEDs and a 200-lumen Daytime Flash mode. It features a super lightweight, yet durable co-moulded construction that is IPX7 (waterproof) rated. Up to 20 hours of runtime (eight hour increase) and up to 200 lumens (20 lumen increase) of output. And it features an integrated USB stick for convenient cable-free recharging. The KTV Drive Front offers five output modes.The KTV Pro Smart Rear light is an 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.Lezyne KTV Drive/KTV Pro Smart Light Set SpecificationsKTV Drive FrontMax Lumens: 200 lumens.Weight: 47.5g.Max Runtime:20 hours.Recharge Time: 3 hours.KTV Pro SmartMax Lumens: 75 lumens.Weight: 45g.Max Runtime: 19.5 hours.Recharge Time: 3 hours.