The Sun King Home 40Z is a premium product with 2 overhead lamps, 1 portable lamp and a USB charger for mobile phones and other devices. Each overhead lamp vividly lights up an entire room while the portable lamp allows flexibility of use. With a 3000mAh Lithium Ferro Phosphate battery, it has a runtime of up to 40 hours on a single day’s charge. The Sun King Home 40z comes at an amazingly affordable price point, the price of a solar lantern!