Feature: 1. High Conversion Efficiency: This 20W outdoor solar panel can effectively convert sunlight into electricity with a high conversion efficiency up to 20%. 2. 2 USB Port: Portable solar panel is designed with dual female USB ports, you can easily charge your devices via USB charging cable. 3. Polysilicon Solar Panel: The solar panel is made of polysilicon material, which can achieve long term output stability and reliability. 4. Application: Perfect for camping, hiking, picnics and other outdoor activities. Please note that the junction box is not waterproof, please keep it dry. 5. Simple to Use: You can place the solar panel in sunlight and use it to charge the device directly, please note that it has no power storage function. Specification: Item Type: Solar Panel Material: Polysilicon Maximum Power (Pmax): 20W Open Circuit Voltage (Voc): 20V Maximum Power Voltage (Vmpp): 18V Short Circuit Current (Isc): 1.2A Maximum Power Current (Impp): 0.9A Output: USB DC Controller: Rated Voltage: 12V/24V Rated Current: 100A Maximum Voltage: 50V Maximum Power: 1800W (12V), 3600W (24V)Weight: Approx. 650g/23oz. Package List: 1 x Solar Panel1 x Controller1 x Clip1 x Car Charger4 x Suction Cup2 x Manual Note: Please Note: No power storage function