3 types for choice : 3LED+1 krypton bulb headlamp 6LED+1 krypton bulb headlamp 7LED bulb headlamp LED power : 8000 MCD/pc Multi step switch Extensive lifetime of LED (100,000 hrs) Adjustable Inclination Adjustable Strap Water resistant Silver or Transparent blue for appearance use AAA x 3 batteries Unit weight : 100 grams