Solar-Powered String Lights with Auto On/Off: Powered by solar energy—no extra electricity costs. Simply turn on the switch and charge in sunlight for 6–8 hours; the lights turn on automatically at night and operate for 12–15 hours. Please do not place the solar panel in an area exposed to artificial light at night. 8 Modes & Memory Function: Features 8 lighting modes, including combination, wave, sequential, slow glow, chasing/flashing, slow fade, twinkle/strobe, and steady on. A built-in memory chip automatically saves your last selected mode. IP65 Waterproof: Suitable for both indoor and outdoor use; resistant to light rain and water splashes. Easy Installation: Comes with a solar panel and ground stake; the 33-foot (approx. 10m) string features 100 LED bulbs and includes a 6.56-foot (approx. 2m) lead wire for flexible solar panel placement. Ideal for decorating gardens, patios, lawns, porches, entryways, and courtyards. Versatile Use: Perfect for weddings, patios, gardens, backyards, gazebos, parties, fences, porches, trees, roofs, and pool areas, creating a warm and romantic atmosphere. Weight: 2.02 lbs.