Solar charging (3.7V/30mAh current): pl the solar panel at the pl covered by solar light; When the battery is charged, the charging in will turn red; As the solar charging panel is small, the current can only reach 30mA, which is only used to protect the battery; The service life of solar energy is more than 30 years (5 hours per day).2. USB Type-C charging (3.7V/1000mAh current): When charging the radio, use Type-C plug (data cable of general other electronic equipment); When the battery is charged, the charging in will flash red, and stop flashing after full charge;3. Hand power generation: pull up the hand roer, grasp the handle and rotate it. The red charging in light is on, indiing that charging is in progress. When the roer is rotated clowise or counterclowise, it should rotate continuou and keep rotating at a constant speed of 130 rpm for 1 minute. It can be used for lighting 20 minutes and the radio works for 5 to 10 minutes. The first use is to rotate the hand roer for 3 to 5 minutes to activate the nal battery4. Battery replable design, excluding battery payment, self purchased power distribution, which can be extended to 3500 mA5. [Weather radio]: The weather alarm radios for hurricanes, tornadoes, storms, fires, etc. will ensure the safety of your family. The solid appearance design is durable and waterproof, and is a friendly and reliable outdoor expansion partner. [High light lighting]: The built-in flashlight of the 5LED light will blo the bla color and greatly improve the visibility in camping, hiking or other outdoor activities. Don't let the dark disappoint you. [Portable radio]: This lightweight AM/FMradio is a worry free way to listen to important weather or news updates. The overall size is the same as that of an ordinary smartphone, and the external belt will not occupy too much sp.