Efficient Solar Charging : This 28W solar panel utilizes premium single crystal cells with high transmittance ETFE coating, achieving excellent 25% energy conversion. Ideal for energizing phones, tablets and efficient units during outdoor excursions or unexpected scenarios. Two USB A Charging Ports: Features two rapid USB A ports (18W each) with intelligent IC technology for simultaneous multi device charging. Excellent for camping, hiking and fishing adventures requiring multiple device power. Space Saving Foldable Design: Lightweight foldable structure (7.8x11.6 inches when folded) weighing just 1.1lbs, with sturdy metal attachment points for securing to backpacks, tents or trees. Essential for mobile camping and wilderness trips. snowproof Build: Constructed with ETFE laminated panels and IP67 rating to resist rain, and challenging conditions. Robust design maintains consistent action for outdoor applications (junction box has basic weather resistance). Comprehensive Accessory Set: Includes 30W solar panel, user guide, carabiners and a multi purpose charging cable. Complete package ready for immediate outdoor use in sunny conditions to meet various power requirements.