The Axiom Zap 2 LED Headlight keeps your path illuminated and those around you alerted of your presence. Its high-intensity output of 50 lumens has 3 operational modes of steady, pulse, and flash, and can run for up to 13 hours (on flash). The white LED light runs on a built-in lithium polymer battery that is USB rechargeable and has an indicator light for battery and charging status. It also includes a quick-release rubber strap mount that fits handlebar sizes 19-48mm. The Zap 2 headlight is water-resistant, so you can ride in nearly any weather condition. Features: High-intensity white LED with an output of 50 lumens 3 light modes (flash, steady, pulse) for varying daylight conditions Indicator for battery status and charging status USB rechargeable lithium polymer battery Water resistant to keep you riding rain or shine Quick-release rubber strap mount fits handlebars 19-48mm Specifications: Brightness: 50 Lumens Battery Type: Rechargeable (Micro USB) Run Time: 13 Hours (Max) Beam Color: White Color: Red Weight: -