The hand crank AM/FM radio with LED lamp and power bank cell phone charger can be used as a power bank to charge cell phones and other electronics. Rotation should be over 120 per minute for manual rom generation. The rotation frequency between 120 and 140 is recommended. HAND CRANK LED FLASHLIGHT: Multifunctional crank radio AM/FM weather radio with LED lamp, cell phone charger and emergency siren. The multifunctional and compact emergency radio with emergency charger i suitable for outdoor and emergency use. CREATIVE DESIGN: Rechargeable crank radio dynamo radio with LED light is made of high quality materials with creative design, portable, lightweight and durable. LED lifespan: over 50,000 hours; Illumination: 5 LEDs - 75000 mcd; 15000mcd per LED; Flash Size (Length * Width * Height): Approx. 186 * 66 * 102mm / 7.32 * 2.59 * 4.01in. EMERGENCY RADIO FLASHLIGHT: Survival radio with a bright LED flashlight, a radio to receive information and an alarm to call for help. SUPER BRIGHT & CONVENIENT: Solar Hand Crank Radio Handy charging radio with crank arm for flashlight charging, convenient and useful. Super bright, durable and energy efficient 5 LED flashlight.