Note:This is an assembling kit of solar power bank, not a whole power bank, you need to install it by yourself.This power band must work with polymer battery, battery is not included.Please fully charge this power bank before first using it. Description:This is a DIY kit of solar charger with 10000mAh large capacity, which allows fast and safe charge for mobile phones. Built-in military crystalline silicon, it can effectively convert the solar energy into electric energy and store in battery for all-day use, specially designed for sport, travel, and other outdoor activities. Specifications:Material: PlasticColor: Gold, Silver, Black, Rose Red, Blue (Optional)Battery: Polymer Batteries (NOT Included)USB Port Quantity: 2USB Input: DC 5V 1AUSB Output: DC 5V 1A/ 2APower Capacity: 10000mAhConversion Rate: 75 %Size: Approx. 155 x 76 x 10mm/6.1 x 3 x 0.4inPackage Weight: 40g Package List:1 x Solar Power Bank Case Kit 10000mAh super large capacity, suitable for sport, travel, and other outdoor activities, you can easily charge for your mobile phone anytime and anywhere. Supports solar fast charge, ensures up to 75% high conversion rate of solar to electric, safe and environmental friendly. With dual USB ports, you can easily charge for two devices at the same time, or share this backup power with your families or friends. Independent CPU security system, protect your devices from overload, overcharge, overheat and short-circuit while charging. Ultra‑thin design, with only 10mm thickness, comfortable for hands feeling.