Features: 【USB Output & DC 6V Output】As a pure DC output system, it offers 4pcs 6V DC output ports, and one 5V USB output for charging mobile phone, MP3/MP4, digital camera and other USB-enabled devices. 【BT FM/MP3 Function】Concealed radio antenna and 87.5-108MHz FM, allow you to listen to the radio during charging. You can also play music via BT, TF or U disk, and handle phone call. Press-type switch control, with adjustable volume, easy and simple to operate.  【Bright Lighting】The product features 4-LEDs front light and a side flashlight, freely switching with one button. Two portable LED-light bulbs are included in the package to meet more needs.  【Independent Charging & Discharging】Charging and discharging can be performed simultaneously without interfering with each other. Indicator lights show clearly system's charging and working status at any time. 【Safe and Reliable Use】The product provides multiple protection against overcharge, over discharge and short circuit, with red light indication. It will enter a low power state after the main switch is turned off.  【Outdoor Companion】Solar charging design easily copes with power problems in emergency. Together with DC output & USB output, LED-lighting, FM/MP3 play function and portable handle, it is perfect for outdoor activities.  Note: * Please read the user manual carefully before use. * There may be slight errors due to manual measurement. Specifications: Material: ABS Color: Orange  Plug Type: EU / US / UK (Optional) Battery Capacity: 7.4V / 6000mAh Output Voltage: DC 6V (4pcs); USB 5V / 1A (1pc) Audio Format: Support FAT32, FA16 Play Mode: TF / U Disk / BT / FM FM Frequency: 87.5MHz-108MHz Frequency Response Range: 160Hz-20KHz Operating Temperature: －10℃~55℃ Item Size: 18.8 * 11.3 * 7.5cm / 7.4 * 4.45 * 2.95in Item Weight: 659g / 23.25oz Package Size: 30 * 18 * 12.2cm / 11.81 * 7.09 * 4.8in Package Weight: 1696g / 59.82oz Package List: 1 * Solar Speaker System 1 * Solar Panel (10V) 1 * Travel Charger 2 * Portable LED-Light Bulb 1 * User Manual