Amir 200 LED Solar Powered LED String Light, 77 Feet Starry Ambiance Lighting with USB Interface for Halloween, Christmas Party, Indoor/Outdoor Decoration (Warm white) USB interface - With USB interface, you can use on Power Bank, Computer or Wall Charger indoor. Connect the USB interface, and you will get a bright decoration. With solar panels, you can also use it outdoor for free energy. 2 MODE - STEADY and FLASH modes,form a beautiful and fairy world. Solar Panels - Auto lights up at night / Auto off at sunrise. 2 in 1 Installation - Stick into the ground./Use included screws to mount on the wall. Easy to Shape - Flexible Copper wiring can be easily designed into many shapes; wrap around tree trunks or gazebos;After dark,the wire fades to invisible, leaving only the bright lights.