Size: 18 x 13 x 3cm. 3 levels of brightness: Suitable for all lighting needs. Eco-friendly lighting: Get a solar-powered lamp. Compact and portable: Collapsible design for easy travel. Power: Charge by either solar power or 5V DC Micro USB. Robust and durable: Perfect as hiking equipment and fully functional in extreme temperatures up to -40℃. Collapsible Solar Lamp | Black | Living Social