500 watt power inverter.

Attachments alligator clip to attach directly to battery and also comes with attachment to hook directly to cigarette lighter plug. I have noticed that you seem to get a bare minimum of 500 when hooked directly to the battery and when using the cigarette plug the wattage seemed to drop maybe 5 percent also read that this is typical. This is a rally brand and had 2 115volt plugs as well as 1 usb outlet in front. Prepair always good to have another source of power you never know these days excellent for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.