Feature: 1. Solar Chargers for Electronic Devices: The built in USB Max 5V 4A output port can be directly connected and charged in sunlight for mobile phones (for Android and IOS), small mobile power supplies (recommended below 10000mA), tablets, USB fans, flashlights, smart watches, portable WIFI and other small electronic devices. Note: The solar charger cannot store electrical energy, and the charging time depends on the capacity of the device. 2. Excellent Low Light Performance: The solar panel adopts a special series parallel structure to reduce internal resistance. Compared with other 28W solar panels, our 28W solar panels can generate electricity normally on cloudy days, in the morning and at night under the same shielding conditions, providing sufficient energy for mobile phones, tablets, cameras, etc. 3. Durable Solar Panel Charger: ETFE film lamination and packaging technology, with nice light transmittance and weather resistance; Made of A+ polysilicon, the solar panel charger effectively converts solar energy into electricity with a conversion rate of up to 24%, and the IP67 protection class can work in unexpected weather. Ideal for outdoor power emergencies. Note: The junction box is not waterproof. 4. Portable Solar Charger: Expansion size is 33.5 x 7.1 x 0.8 inches, 6 fold design, folded size is 7.1 x 4.5 x 1.6 inches, similar to the size of a mobile phone, only 0.96bls (435 grams), comes with 2 mountain buckles and a 3 in 1 charging cable, which can be easily tucked into a backpack. It can also be hung in backpacks and tents. The 28W solar charger provides portability and simplicity for your trips, hikes, camping, and backpacking. 5. Unique Surface Design: Solar panels are not only portable and efficient, but also beautiful. It is especially beautiful in the sun. The fabric is also made of 600D waterproof Oxford cloth. The port design and panel are located on one side, which is not only easy to use, but also folds to prevent water. Specification: Item Type: 28W Portable Solar Panel Charger Weight: 477g/16.8oz Material: polysilicon and Oxford cloth Output Port: USB Solar Cell Conversion Efficiency: 24% Solar Panel Laminating Process: PET Maximum Power: 28W Operating Voltage: 5V Maximum Power Current: 4A(Max) Folds: 6 Folding Size: 180 x 115 x 40mm/7.1 x 4.5 x 1.6in Expansion Size: 850 x 180 x 20mm/33.5 x 7.1 x 0.8in. Package List: 1 x Solar Charger