FM Radio frequency range: 87-108MHz. 1. A reusable solar generator in a sunny area can charge the built-in battery, which is environmentally friendly and energy-saving 2. You can use the built-in large capacity 18650 battery or an ordinary Dry cell. The product has low power consumption, improved energy efficiency, and is stable. 3. It 's perfect for indoor, outdoor camping, squares, and areas without electricity, listening to music, and playing music. 4. With TF card and USB music playback function. 5. With a radio function (FM radio) to listen to music and radio. 6. With Bluetooth 5.0, it can play lossless music wirelessly. DESCRIPTION 1. Equipped with USB and TF card play function, it can be connected to Bluetooth 5.0 for playback. 2. It supports playback formats：MP3, WMA 3. It is powered by a rechargeable battery800mAh and has two built-in solar panels. 4. DC 5V rechargeable, free charging cable. 5. Product output power: 3W 6. Frequency range: 87-108MHz. 7. Product size：10.5*9.5*11.5cm 8.Weight：400g 9.Number of unilateral solar panels Power: 5V 0.8W 10.Single sided solar panel size: 100 * 46mm Packing list: 1*Radio 1*Charging cable Note: 1. Due to slight color changes caused by manual measurement and different display settings, please allow for a difference of 1-3cm (0.4-1.18 "). 2. Due to differences in lighting and screen, the color of the item may differ slightly from the image. Please understand.