Function: 1. Crank to generate power. 2. High brightness LED. 3. Three brightness/power use options. A 1 LED option for close up; a 3 LED option for a work light and a 3 LED flashing option for emergency use. 4. 320皌wistable head to light. 5. Waterproof in 10 meters. 6. Case protection class: IP68 Features: 1. Crank to generate power. 2. Long life button 3. Revolutionary design, 320皌wistable head for any angle lighting. 4. Full sealed design, waterproof in 10 meters and can be cranked to use in water. 5. Stylish deign, convenient to use.