The high-efficiency 0.36w polycrystalline solar panels are perfect for outdoor use with permanent free power, a 2v battery that charges enough to power small power devices like cell phones, lights, and can also be used to drive a variety of USB devices.Each solar panel is fully tested in the factory to meet the highest quality standards.Several of these panels can be connected in parallel or series to provide additional power to your needs. Feature: 1. ¡¾EXCELLENT PERFORMANCE¡¿This solar panel is rugged and durable, with high energy conversion rate, dust resistance and compression resistance, good service effect and long life. 2. ¡¾CONVENIENT¡¿The solar panel is only 42g and only 1.7x1.9x0.1in in size. It is small and light, which makes it easy to carry around. 3. ¡¾EXCELLENT MATERIAL¡¿This product is a solar panel made of polysilicon with high conversion rate and good performance. 4. ¡¾OUTSIDE ACTIVITIES¡¿Awesome for outside activities such as camping, hiking, traveling and other emergency use. Perfect for outdoor enthusiasts. 5. ¡¾PROFESSIONAL MANUFACTURING¡¿This solar panel is professionally manufactured with stable performance and high reliability. Specification: Item type: Solar Panel Material: polycrystalline solar panel Color: As picture shown Weight: Approx. 42g Current: 0-180 mA Operating voltage: 2V Open circuit voltage: 2.5v Wire length: Approx. 12-15cm/4.7-5.9in Size: Approx. 42.5 x 48.5 x 3 mm/1.7x1.9x0.1in Package List: 4 Pcs x Solar Panel