Hecto Drive STVZOGerman STVZO optimized lens with approved flood and long-range beam. High performance LED delivers 40 Lux (140 lumens) and up to 7 hours of runtime. Durable, heat-dissipating CNC machined aluminium construction. Versatile strap securely fits to most handlebar shapes and sizes.Femto USB Drive KTVZOGerman STVZO optimized lens with up to 270° of visibility. High performance LED delivers eight lumens and up to 8 hours of runtime. Lightweight and compact co-moulded construction. IPX7 waterproof rating. Versatile, secure mounting strap. Micro-USB rechargeable.Lezyne Hecto STVZO 40/Femto USB STVZO Light Set FeaturesGerman STVZO optimized lens.Up to 7 hours runtime.CNC Machined aluminium (front only).IPX7 waterproof rating (rear only).Fits to most handlebars and seatposts.Micro USB rechargeable (rear only).Lezyne Hecto STVZO 40/Femto USB STVZO Light Set SpecificationsHecto Drive STVZOMax Lumens: 36 lumens.Weight: 114g.Max Runtime: 7 hours.Femto USB Drive STVZOMax Lumens: 8 lumens.Weight: 23g.Max Runtime: 8 hours.