... 3. Charged by sun and hand-cranked YF-RD02 Solar Radio: Technical Parameter: FM receiving frenquency range -- 88-108MHzAM(media ... battery store energy, green environment-friendly,economical,safe,recyclable, radio can be work under the sun if the battery without ... with low noise,high efficiency and low power consumption , telescopic antenna can enhance FM receiving ability, speacker and earphone can be ...