Strong compatibility, suitable for a variety of different mobile phone/digital charging devices, polycrystalline silicon solar film high conversion rate, charging 2A input, matching 2A charging head charging speed increased by 1 time. Discharge 2.1A output, dual USB ports, use 2 devices at the same time. Automatically turn on solar charging under strong light, no light can also use the charging head cable to charge. Configured with extra large solar panel, light charging next to windows, under lights, car head, bus stops, and other scenes. Reduce the thickness and weight to make it lighter with the same capacity. Made from aluminium material, measuring 5.63*2.95*0.36 inches, this custom mini slim solar power bank 10,000mah. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Compact size, lightweight, easy to carry.