Powerful and expansive, Solar String Lights provide up to 40 hours of light on a single charge. With its completely detachable unit, you can remove and recharge the unit, all while leaving your string setup intact. Featuring a 44 ft nylon-braided cord, 20 shatterproof bulbs, and a detachable 4,000 mAh rechargeable battery, these solar string lights provide illumination and ambiance to any outdoor space.