Q: Can I get a sample before order in bulk? A: Samples are available. Q: How can I pay for the samples? Delivery time? A: Paypal, Western Union, TT, Alibaba payment are ok. We arrange delivery in 1-3 working days upon payment, and ship by DHL/UPS/TNT etc. Will arrive in 3-7 working days. Q: Are you factory? Can you manufacture the device as I need? A: We are factory with our own R&D team. OEM & ODM are available. Q: What is the delivery time of OEM orders? A: 15-25 working days upon payment. Q:What is the warranty ? A:1 year upon delivery