1. [Four Charging Methods] The crank radio is equipped with a built-in 2500mAh rechargeable battery, and the radio can be used continuously for up to 12 hours. It supports four charging methods: solar power, manual cranking, USB cable, and battery. 2. [Backup Power Supply and Reading Light] The 2500mAh battery provides sufficient power for mobile devices in emergencies. The super-bright flashlight and reading light can be used for outdoor night lighting. 3. [SOS Alarm] The generator in the handheld radio has an SOS alarm function. The LED flashlight flashes continuously and emits signals, allowing you to send out a danger alarm in time. 4. [AM/FM Radio] The solar radio can meet your radio needs anytime and anywhere. Listen in real - time to learn about the weather conditions and avoid possible bad weather in advance. 5. [Ideal Travel Companion] The solar radio can serve as an external battery for mobile phones, tablets, and MP3 players. It is also equipped with a solar panel. It is small and portable (net weight 355g, 156*55*95mm), does not take up much space, and can be put into any pocket or handbag. It is your perfect travel companion.