Solar dual USB power bank with a hook, it has LED light function and 3 grades power reminder, capacity 5000 mAh. Perfect advertising idea for travel, outdoor, any events you want. input power: 5V – 1A. output power: 5V-1A/2.1A. Battery type: polymer solar energy. Output interface: two USB interface.indicator lights to show battery level and carabiner that can attach to your backpack or purse/bag. Silicone shell makes it drop-resistance and high-quality solar panel absorbs solar power fast. Perfect for outdoor activities. This high tech gadget will be sure to cause a splash as part of your company marketing efforts.