Economical and eco-friendly, charge the rechargeable internal battery with the solar panel.It is also charged with AC power when in a room with a power supply.The package includes: solar panel, 3 LED lamps, Central Unit with USB / SD Mp3 Player with FM Radio lens and LED lamp, remote control, USB charger for charging multiple devices and 220V power charger.The only solution for lighting and charging when in nature! Operate 15-20 hours using 2 lamps. Built-in 6V 4Ah rechargeable battery. Output: DC 6V up to 3 devices at a time. Charging time with mains power: 7-9 hours. 3.5W Solar Panel - Charging time 13 - 15 hours in full sun. AC 110-240V, 50 / 60Hz. Maximum panel power: 3.5W, 9V. Maximum panel power current: 0.38A. Maximum panel power voltage: 11.11V. Panel dimensions: 25.7 x 14.4 x 1.3 cm. Panel cable length: 3 meters. Size of base unit: 20 x 15 x 6.5 cm.