Peak power: solar panel peak power 10W Output voltage / current: 5.5V / 0-2A Solar conversion rate:> 19.5% (A paper monocrystalline silicon) Output interface: USB (built-in voltage regulator) Expanded size: 650 * 170 * 3MM Folding size: 170 * 110 * 30MM 190 * 110 * 40MM (packaging) white box Charging instructions: does not support the power storage function, the device can be directly charged in sunlight, the charging time and "" current are different for different light intensity, can be used with mobile power, the effect is better! Accessories: Two carabiners