The Surfaces have been used, but are still good to use. Units are pre installed with a clean version of Windows 10. Batteries have at least 65% of the original capacity. (Good for 2-3H of regular use) 30 days warranty. For business clients we can provide invoice with company details and reversed tax / vat, in this case total amount = amount ex tax, no possibility for tax refund. DISCLAIMER: THE UNIT PRESENTED IN THE PICTURES IS A SAMPLE UNIT. USER EXPERIENCE MAY VARY. PLEASE KEEP IN MIND THAT THESE DEVICES ARE C-GRADE. SOME SCRATCHES/WEAR MAY BE VISIBLE.