Needed in case of Emergency: Built-in 2000mAh battery can charge the phone in emergency If there is no power to charge, the hand crank and solar panels can save energy for you Portable AM/FM/WB radio, flashlight, reading light, SOS alarm, solar powered radio meet your various needs and are very convenient in emergency situationsUpgraded 2000mAh Large Capacity Version : The battery capacity is twice or even four times that of other solar radios on the market The solar radio uses replaceable lithium-ion batteries, which can effectively extend the electromagnetic life of the radio in case of power failure or emergency In case of emergency, it can be used as a mobile power source for cell phones4 Kinds of Charging Methods: Bad weather leads to power outages or there is no power supply in outdoor sports campsites, the hand crank and solar panels can power the radio in an emergency Battery charging and USB fast charging are the main power sources for daily use The battery can be replaced and is available in specialist shops and supermarketsFlashlight and Reading Light: This radio integrates multiple functions and can provide light If you are an outdoor enthusiast or need to go to places where there is no light, this flashlight radio is a good choiceSOS Alarm with Flashing Light: The solar radio is equipped with an SOS function When faced with a dilemma, danger or dark place, double click the SOS button to activate the loud siren and flashing high beam to remind others