These solar string lights are ideal for decorating outdoor shrubs, umbrellas, doorways, and much more. The 20 energy-saving, multi-color LEDs with translucent hummingbird covers are solar-powered so you won't see an increase in your electricity bill. The separate solar panel allows for more versatility in placement - lights can even be placed in shady areas. Each hummingbird measures about 2 inches wide with 5.5 inches of space between each hummingbird. Length 17.25 feet with 8.5 foot lead wire from first light to panel. Solar Panel:. Voltage: 4.0 V. Current: 70 mA. Power: 0.28 W. Battery:. Voltage: 3.2 V. Capacity: 400mAh Ni-MH AA x 1.