Custom Power Bank, The Usil UL 8000Mah Solar Power Bank - Water Resistant & Dual USB, The Usil UL 8000Mah Solar Power Bank is a UL version (UL safety standard with many improvements, UL certificate expired) of a durable solar charging power bank. Leave it by a window in the office or clip it onto your bag on a hike to keep it charged and ready when you need it. It comes with an improved 5-line solar panel design for a 40% efficiency improvement over older models! The design is also anti-shock and water resistant, making it a perfect adventure companion!2 USB output, Micro Input, 8000mah*Dual charge with solar and traditional*Includes a micro USB charging cable, Carabiner, a user's guide*Eco-FriendlySpecifications:UL standardMicro Input: 5V/2A2 USB outputs: 5 V/2.1A (max)Capacity: 8000mAhMaterialABS + Silicon ... #PWB219 $24.98/each.