Super bright: After the battery is fully , 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 equal 8MIN, left and right adjustable switching.Alarm function: the alarm sound shall not be less than 120dB. Anyway, it beeps when you 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 manually; , . 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: 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) equal 8 min (8min); 4. The receiving time of fully battery (moderate volume) equal 3hr (h)Lighting performance: 1. Both sides 2 diameter Maximum luminous flux of 5LED equal 6Lm; 2. The maximum luminous flux of the middle 1 chip LED is equal 30Lm (lumen); 3. Both sides of fully battery 2 diameter 5LED lighting time equal 4.5 ; 4. The LED lighting time of the middle 1 chip when the battery is fully is equal 2 ; 5. Hand shake for 1 minute 2 diameter 5LED lighting time (2.5-3 cycles/s) equal 30min.Model Number:Hand ank FlashlightAlarm performance:1. Alarm loudness (measured by the test probe close to the horn) equal 120dB (dB)2. Battery fully alarm service time equal 40min (min)3. One minute manual alarm service time (2.5-3 cycles/s) equal 2min (min)Note:Discharge until the sound is distorted!External internal charging:1. Maximum input voltage/current: 5.00.2V/ 300mA50mA2. Charging interface: Standard USB-A male3. External to internal battery charging time: 2-3 hours (about 2.5 hours)Mobile power output function:Internal and external output: no-load output voltage: 5.0-5.6VMaximum output current: 5.0 0.5V/400mAContinuous charging time of mobile phone with full charge: such as for erission K750c: equal 15minNote: Applicable to emergency charging of Android and IOS system smartphones!Size and weight: Overall Size:156.3mm x 50mm x 34mm/6.2 x 1.97 x 1.4inOverall weight: About 153gBuilt-in battery: polymer lithium battery 3.7V/260mAhLED lamp: 2835 0.5W 6000-6500K 55-66LMDiameter 5mm white light 9-10LMGenerator power: 2.5WColour:As ShownMaterial:plasticPackage Contents:1 x Hand Crank FlashlightOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.