Specification: Item Type: Solar Panel Kit Material: Monocrystalline Silicon, ABS Weight: Approx. 387g/13.7oz Solar Panel Size: Approx. 32.5x14.5cm / 12.8x5.7in  Power: 30W Solar Panel (Without Power Storage) Output: 18V 5V USB Dual Output Controller: 12V 24V Controller Adaptive Package List: 1 x Solar Panel 1 x Controller 4 x Suction Cup 1 x Instruction Manual  1 x Cigarette Lighter 2 x Buckle 1 x Connecting Cable 1 x Clip Note: Manual measurement please allow some error. Features Highly Efficient: 30W solar panel converts sunlight into electricity, providing a reliable charging solution for electronic devices. Multifunctional Output: 18V 5V USB dual output interface, suitable for different types of devices, such as cell phones, tablet PCs, car batteries, etc. Waterproof Design: Waterproof controller guards the solar panel from bad weather, ensuring reliability and long life in outdoor environments. 12V 24V Controller: Equipped with 12V 24V controller, compatible with various home and vehicle power systems, convenient and practical. Eco Friendly and Energy Saving: Using solar energy reduces the consumption of fuels, which is more environmentally friendly and energy saving.