The Green Lion power bank is a 10,000mAh portable charger with both wired and wireless fast-charging capabilities, including 22.5W output and 20W PD (Power Delivery) via USB-C. It features MagSafe compatibility for wireless charging, a transparent body to see the battery level on an LCD display, and multiple ports for charging devices simultaneously. This makes it a versatile option for users who need fast, on-the-go charging for multiple devices.