Super bright: After the battery is fully charged, the three LED lights can be on for 8 hours at the same time, and listen to the radio for 100 minutes or the alarm clock for 180 minutes. Lighting mode - two small lamps are on at the same time - one headlamp switch. Radio function: FM87.5-108MHz frequency range, output power not less than 0.8W, shaking for one minute, radio greater than equal 8MIN, left and right adjustable switching. Alarm function: the alarm sound shall not be less than 120dB. Anyway, it beeps when you press the button. If the volume is low, shake it immediately to generate and supplement energy. Easy to use: easy to use, no need to replace the battery, can be charged manually; Unique shape, good feel. You can also charge your phone in case of emergency! Applicable occasions: flood fighting, field exploration, mountaineering, camping, hiking and other occasions can be used. The LED light on the charging side 2 can be on for more than half an hour after one minute of manual operation. Main parameters of radio performance: 1. FM overall sensitivity:Better than 70dBuV; 2. FM receiving frequency range:87.5-108MHz (MHz); 3. Hand shake for 1 minute Radio time (2.5-3 cycles/second, moderate volume) greater than equal 8 min (8min); 4. The receiving time of fully charged battery (moderate volume) greater than equal 3hr (h) Lighting performance: 1. Both sides 2 diameter Maximum luminous flux of 5LED greater than equal 6Lm; 2. The maximum luminous flux of the middle 1 chip LED is greater than equal 30Lm (lumen); 3. Both sides of fully charged battery 2 diameter 5LED lighting time greater than equal 4.5 hr; 4. The LED lighting time of the middle 1 chip when the battery is fully charged is greater than equal 2 hr; 5. Hand shake for 1 minute 2 diameter 5LED lighting time (2.5-3 cycles/s) greater than equal 30min. Model Number:Hand Crank Flashlight Alarm performance: 1. Alarm loudness (measured by the test probe close to the horn) greater than equal 120dB (dB) 2