This 6W solar panel utilizes high efficiency mono PERC solar cells with efficiency up to 22. 5%, to ensure its high output. It is laminated by tempered glass to protect the solar cells inside, making it rigid, durable and long lasting. . We suggest the P105 as an alternative. Alert me when this product is back in stock. Bought it for use in case of a power outage and/or the need to. . 6. Copyright© 2022 Onset Computer Corporation. Other products and brand names may be. . Check out this high quality, high output, fully enclosed solar panel with a nice solid aluminum/plastic frame. The "6w" designation refers to the panel's power output, which is 6 watts, while the "5v" indicates the output voltage, which is 5 volts.