... 500sets Warranty 1 year (if you find any defective accessories in the first order,we will give you the new ... parts for free to replace in the next order, the fact is that our ... six strict QC processes including incoming materials QC, IPQC (in process QC on patrol), LQC (line QC), Ageing ... color,battery capacity,and the quantity that you need in the email.after we confirm all the deal ...