Part of the V20 cordless system High pressure and low volume output allows you to quickly inflate anything from a tire to an air mattress 3-Power sources provide ultimate convenience - V20 20V max* battery; AC wall plug; or 12V car adapter plug Automatic shutoff allows you to set your PSI and the unit will shutoff once it is reached Digital PSI gauge provides an easy to read display This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.