Environmentally Friendly Solar Energy Energy saving without wiring or external power supply. In sunny days the solar wind chimes charge under direct sunshine and glow at night. The designed solar panel absorbs energy quickly and the solar string lights can last up to 812 hours after full charge (just make sure the switch is in the ON position). Waterproof Design and Easy to Use IP65 weatherproof performance. The rain proof and moisture proof design makes the Blue Hummingbird wind chimes suitable for outdoor and indoor decoration, even in rainy or snowy days. The wind chimes are made of durable ABS plastic and PC, ensuring the LED lights do not fade or deform. They are lightweight and easy to hang. Auto operated wind chimes Automatically recharge during the day and automatically light up at night. When the environment is dim, the lights automatically illuminate. Easy to use wind chimes Hang up and use without wires. Maintenance, simple and convenient. Just let nature power your spiral wind chimes. Use scenarios Garden, yard, patio, or along a walkway: place the wind chimes where they catch sun during the day and provide ambient light after dark, without wiring or power outlets. Balcony or apartment terrace: add decorative lighting and a peaceful glow to small outdoor spaces with easy hanging installation. Indoor display or sunroom: use as an attractive, maintenance decorative accent that remains powered by ambient light.