Warranty: Used computers warranty is one month from the date of delivery. Battery works over 30 min. tested. Used computer may have some minor scratches on top cover or Body. There could be sign of heavy use in the palmrest and keytops.HP English OS Laptop computer 英語版OSノートPC、intel Core i5-3210M @ 2.50 GhzRam:-4 GB, HDD:-320 GB, Display:-15.6 TFT, inbuilt DVD Drive, WLAN and USB webcam Bundle(not inbuilt)Windows 7 Pro English,Used Computer, 中古ノートModel: HP Probook 4540s, Charging adapter includedHP English OS Laptop computer 英語版OSノートPC、Core i5-3210M @ 2.50 Ghz, 4 GB, 320 GB, 15.6 TFT, inbuilt DVD Drive, WLAN and USB webcam Bundle, Windows 7 Pro English, Japanese keyboard, Used Computer, 中古ノート Model: HP Probook 4540sHP English OS Laptop computer 英語版OSノートPC、intel Core i5-3210M @ 2.50 GhzRam:-4 GB, HDD:-320 GB, Display:-15.6 TFT, inbuilt DVD Drive, WLAN and USB webcam Bundle(not inbuilt)Windows 7 Pro English,Used Computer, 中古ノートModel: HP Probook 4540s, Charging adapter includedWarranty: Used computers warranty is one month from the date of delivery. Battery works over 30 min. tested. Used computer may have some minor scratches on top cover or Body. There could be sign of heavy use in the palmrest and keytops.