Whether you need power while camping in a tent or trailer, or looking for a reliable emergency power supply, the Goal Zero Yeti 400 Portable Power Station helps you keep all your essential devices charged up and ready. Open Box items may look and feel brand new, although packaging may no longer be up to Goal Zero standards to sell as brand new. Products may be unused returns or demo models and no longer have packaging. Product are in good condition and verified to be functional. No Returns or Exchanges. 6 Month Warranty. Additional promos or discounts cannot be applied to the already reduced price.