These fairy lights are powered by a mix of options: battery operation, USB power, electrical plug-in, and solar power. Specific battery types mentioned across listings include button-cell CR2032, 3 AA alkaline cells, and a single installed lithium cell in some solar models.
Many of the lights offer multiple effects and modes such as steady on, flashing, fading, twinkling, chasing, and sequenced patterns. Mode counts vary by product — some list 8 modes while others offer up to 16 settings.
The listings include both LED and incandescent bulb types. Wire colors shown include silver, clear, white, and green, depending on the specific string.
Several strings include a remote to change modes and adjust brightness. Many also offer a timer function; one commonly noted timer cycle is 6 hours on followed by 18 hours off when the timer is activated.
Outdoor options include solar-powered strings (often with an installed lithium battery), plug-in electrical designs, and battery-powered strings labeled for outdoor use. Some outdoor listings also note shatterproof bulbs for added durability.
