The X-Scroll is based on the revolutionary CIGS solar technology. Simply unroll the thin-film solar panel to recharge the battery, wrap it up and take it with you on the go. The paper-thin CIGS film is highly flexible and has excellent weak light absorbency. The charger has a smart controller, lithium-ion battery, and features a Bluetooth speaker and lantern. The smart controller offers fast charging and optimized charging/discharging efficiency. This ultimate Bluetooth speaker provides deep, loud and immersive sound, with True 360-degree coverage and wireless range up to 30 feet. The optical grade lens offers extremely bright light illumination.