The Lezyne Femto Drive LED Headlight is a compact, bright light that features a CNC-machined aluminum body that is durable and weather resistant. Features: High-grade, optical Lens also serves as an activation button that cycles through the five modes Multi-position silicon rubber strap attaches directly to the back plate to secure to a wide range of handlebar and seat tube sizes Clip-on System features a patent pending Clip-Strap back cap design and is made of durable composite Matrix material Threaded back cap resists cross threading Two CR2032 batteries are included Five Power Modes: four Flash and one Steady Specifications: Brightness: 15 Lumens Battery Type: CR2032 Run Time: - Beam Color: White Color: Silver Weight: 31g