Flexible Lighting Ambience – 3 lighting modes (low, medium, high) provide just the right brightness for mood lighting, outdoor cooking, or relaxing under the stars. Durable Outdoor Build – 44ft nylon-braided cable, 20 shatterproof bulbs, IPX4 water-resistant – built to withstand outdoor elements. Rechargeable 4000mAh Battery – up to 40 hours of light with removable power unit that also charges your phone and small devices. Solar + USB-C Charging – use sunlight or plug in (3-5 hours via USB-C quic charge) for reliable power; perfect for off-grid living, camping, patio dinners. Portable & Expandable Design – set up permanently or take down easily, recharge the hub while the string stays mounted. The BioLite Solar String Lights are portable, solar-powered lighting systems designed to deliver reliable, ambient illumination for outdoor spaces like campsites, patios, and off-grid gatherings. Built with weather-resistant materials and housed in a compact, expandable design, each set features shatterproof bulbs spaced along a nylon-braided cord and is powered by a built-in rechargeable battery with USB-C and solar recharging options, plus mobile charging capabilities. No outlets or extension cords are needed, making setup simple and self-sufficient. Available in four styles to suit a range of lighting needs