... 3. Charged by sun and hand-cranked YF-RD02 Solar Radio: Technical Parameter: FM receiving frenquency range -- 88-108MHzAM(media ... ,rechargeable battery store energy, green environment-friendly,economical,safe,recyclable, radio can be work under the sun if the battery without ... speacker and earphone can be used ,adjustable volume . Adopt advanced radio IC,high sensitivity FM /AM(medium wave)two-brand ...