The new Sprinter 500 is purpose-built to handle everything from early morning urban runs to all night mountain running adventures. Features: Rechargeable 500 lumens on max setting Dual-Fuel: Maximum flexibility to utilise either the included rechargeable lithium ion BD 1800 battery or standard AAA alkaline batteries (not included) Micro-USB port included on rear battery compartment for easy recharging Red taillight strobe with on/off programmability for increased visibility Six-setting 3 LED battery metre PowerTap™ Technology for instant transitioning between full and dimmed power Variable dimming and strobe mode Digital lockout feature safeguards against accidental use when stored in a pack or pocket Perforated elastic headband with removeable top strap IPX4: Storm proof - Tested to withstand rain and sleet from any angle Max burntime AAA battery: High: 3 hrs Medium: 6 hrs Low: 180 hrs Max burntime BD 1800 battery: High: 3.5 hrs Medium: 7 hrs Low: 100 hrs Lumens: High: 500 lm Medium: 250 lm Low: 6 lm Max distance: High: 50 m Medium: 40 m Low: 6 m Weight: Without batteries: 105 g With batteries: 130 g Warning: https://www.p65warnings.ca.gov/