Knog Blinder Road Standard USB Rechargeable Headlight: White LED~ Gunmetal Body

Features Constant Current Drive Technology that maintains consistent brightness for optimal visibility.
Intergrated USB, low battery indicator
To turn the light on and off, it requires a one second press-and-hold
Dual beam lenses provide light visible up to 800 meters
Dual removable silicone strap for bars 22 - 27mm and 27 - 35mm
Helmet mount and USB extension cord included
Output: 200 Lumens max
Waterproof construction
Modes: (Low-beam) Steady 2 hours / Flash 6 hours; (High-beam) Steady 1 hour / Flash 4 hours