Brand new and high quality Features: Made of food-grade material, strong, durable, and pollution-free, with good performance and long lifespan. Low ESR characteristics with high current as an alternative to electricity, and fast charging takes only a few seconds. Comes with a soldered board, ready to use. It also has resistance or active monomer equalization function. It can also be used as a backup power source in electronic devices such as RAM, for smart meters, motor drives, clock circuits, CMOS shutdown for protection, and other fields. Broader applicability for car starting, solar wind, etc. Super capacitor only, other accessories demo in the picture is not included! Specification: Material: Electronic Component Rated Voltage: 5.4V Rated Capacity: 500F Size: Approx. 6.5 x 3.6 x 7.3 cm / 2.56 x 1.42 x 2.87 inches Color: Blue Quantity: 1 Set Note: No retail package. Please allow 0-1 cm error due to manual measurement. Make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 Set x Super Capacitor