Feature: 1. Multi Purpose: FM radio has a variety of uses, which can not only listen to information, but also charge mobile phones, MP3, MP4, etc. 2. Alarm Function: LED radio also has an emergency alarm function, when you encounter an emergency, it can also be used to call for help. 3. High Sensitivity: Portable radio uses excellent radio integrated circuits, high sensitivity, high signal to noise ratio. 4. Good Sound Quality: Small radio rechargeable uses high quality internal magnetic speakers, with stentorian and beautiful sound. 5. Lighting Design: Chargable radio specially designed energy saving lighting, which is convenient for night lighting Specification: Item Type: FM Radio Material: ABS Size:Approx. 13.3 x 6.3 x 4.5cm / 5.2 x 2.5 x 1.8in Performance: FM/MW/SW 1-2 Broadcast Reception Noise Limit Sensitivity: FM: Better Than 5μv MW: Better Than 2.5mv/m SW: Better Than 50μv Single Signal Selectivity: Better Than 40dB Maximum Output Power: About 100mW Maximum Current Consumption: About 120mA External Power Supply: 5V External Headphones: D3. 5mm In Camera Speaker: D50mm Frequency Range: FM:87.0-108.0MHz MW: 520-1710KHz SW1: 5.9-9.5MHz SW2: 9.5-18.0MHz Three Power Supply Methods: Powered by Nimh Rechargeable Battery Pack, 3.6V, 320MAH (built in Battery) (back of the Unit),AAA (no. 7) Battery Powered (shipped Without Battery) (bottom of the Machine),Solar Powered Four Charging Methods: Hand Power Generation, External Power Charging, Computer Charging, Solar Charging Weight: Approx. 298g / 10.5oz. Package List: 1 x FM Radio1 x USB Cable1 x English User Manual Note: 1. The maximum charging time for USB charging should not exceed 8 hours.2. For some mobile phones that have special requirements for charging current and voltage, charging with this device may not be successful.3. Both battery power supplies can be independently operated, and the power supply circuits are automatically switched during operation, and the electricity does not consume each other.4. The built in battery pack is in the battery box when it is delivered, but the connector of the cable is not connected. After receiving it, the customer needs to manually insert the battery cable into the radio before it can be used normally.5.The product is shipped with built in battery, and the battery compartment is shipped without battery.