Both. The results include plug-in (electric) strings and battery-powered strings—listings explicitly note either “Power Source: Electric” or “Power Source: Battery.”
It varies by model. Some listings are outdoor-rated, some are indoor-only (often battery strings), and several are marketed for both indoor and outdoor use.
Counts in the results range from about 100 to 460 LEDs. Reported overall string lengths span roughly 6.5 inches up to 1260 inches.
Many strings use built-in multi-function controllers with about eight modes (examples: twinkle, slow fade, chase/flash). Some smart, addressable strings offer far more effects—one listing shows up to 100 settings.
Listed spacing options include about 1 inch, 1.67 inches, 2 inches, 2.5 inches, and 4 inches between bulbs.
Some strings are explicitly connectable (for example, one listing notes “Connectable up to 5 sets (1000 LEDs)”). Compatibility varies—some sets can only be joined to identical-count sets and may not connect across different count models (e.g., 100-count vs. 300-count).
Control methods include built-in plug-in multi-function controllers, handheld remotes (common with battery strings, offering timer and brightness), and smartphone app control via Bluetooth or Wi‑Fi for individually addressable smart strings.
Plug-in strings are typically plug-and-hang and arrive untangled for quick setup. Battery-operated fairy lights offer simple placement with on/off, remote, or timer controls. Smart strings require an app-based onboarding step for configuration but otherwise are straightforward to install.
