SOS Emergency Solar Hand Crank Weather Radio, No Battery 1. Battery replaceable design, can use 18650 lithium batteries 2000mAh3500mAh (not included) 2. Can be used as an emergency (output current 1000mAh), you can charge your cell phone or other electronic products, temporary emergency power supply, so that you no longer worry about power outages outside of the trip 3. Subwoofer, good sound quality, clear signal, easy to adjust the frequency 4. High power generator module: up to 600mAh power flow, hand shaking a few seconds, the machine can be restored to use 5. 4 power supply modes: solar charging, crank hand crank power generation, Type-C charging, lithium-ion battery (not included) 6. 4 light modes: high beam (1W x 1LED), low beam (0.3W x 4LED), high beam + low beam (5LED), burst flash 7. FM: 87 - 108MHz 8. AM: 520 - 1700kHz 9. WB: 162.400 - 162.5500MHz (US version only) 10. Size: about 15 x 7 x 5cm 11. Weight: about 246g Solar charging (3.7V30mAh current): 1. Place the solar panel in a place covered by the sun rays 2. When the battery is charging, the charging indicator will turn red 3. Due to the small size of the solar charging panel, the current can only reach 30mAh, which is only used to protect the battery 4. Solar life of more than 30 years (average daily use of 5 hours) USB Type-C charging (3.7V1000mAh current): 1. When charging the radio, use the Type-C plug (universal cable for other electronic devices) 2. When the battery is charging, the charging indicator light will flash red, and stop flashing when it is fully charged 3. When finished charging, it can radio for 10 hours (depending on the volume level used) or 5LED lighting for 16 hours Hand crank to generate electricity: 1. Pull up the hand crank, grab the crank and turn it, the red charging indicator light indicates that it is charging 2. Clockwise or counterclockwise rotation of the rocker should be continuous rotation, and maintain a spee