A must have tool of survival: portable multi-purpose AM/FM emergency radio and charger, SOS alarm siren to ask for help if you have an emergency or someone in need. Perfect for household, camping, hiking, travel, night driving, adventure and survival, an essential tool for emergencySupport frequency range: FM / AM radio with built-in high-quality speaker for entertainment. Instructions:1. First switch the power switch to POWER (use the built-in lithium battery to work), push it to BATTERY to use 3 AAA batteries for power supply (the product does not contain AAA dry batteries)2.LED: Push the switch to LIGHT to illuminate. Push it back to OFF to turn off the LED3. Radio: Push the VOL volume knob to turn on the radio, adjust the volume at the same time, select the FM/AM button, listen to your favorite radio station, and debug the TUNE adjustable selected radio station.4. Emergency alarm: push the switch to SIREN, the emergency alarm will sound5. Emergency mobile phone charging: Bring your own mobile phone charging cable and connect it to the mobile phone. Set the switch to CHARGE to automatically charge the mobile phone in an emergency. When you need to use the hand crank to charge the mobile phone in an emergency, you need to set the switch to BATTERY. Note: When not in use for a long time, please set the switch to BATTERY. And regularly charge the built-in lithium battery to ensure the life of the built-in lithium battery.