Super Bright: The maximum brightness is 42,000mcd, and it can be bright for more than half an hour in one minute by hand. After the battery is fully charged, the 3 LEDs can light up for 8 hours at the same time, listen to the radio for 100 minutes or sound an alarm for 150 minutes. Radio Function: Frequency range FM88-108MHZ, output power not less than 0.8W, hand crank for one minute, radio ≥10MIN, adjustable left and right switch. Alarm Function: The alarm sound pressure is not less than 84dB. In any case, it will ring when you press the button. If you find that the volume is low, you should immediately turn it up to generate electricity and supplement the power. Easy to use: Easy to use, no need to change the battery, it can be charged by hand; the shape is unique, cute, and feels good. Suitable occasions: Flood relief, field exploration, mountaineering, camping, hiking and other occasions can be used.