Cranking for power generation ;3 LED and flashing time after 1 minute cranking;Control by electronic switch , long life-span up to 5 years;120 degree headlamp circumrotatory angle;Unique integrative design, can charge the headlamp by hand cranking, energy saving and no pollution; It can use as headlamp, also can use separately;Lightweight size, convenient to carry; Ideal camping gear to equipment when camping.