1. How to make payment: just select the quantity and color you need, chose the shipping way, then can click to make payment and put your address. If need help, click to chat with us:)
2.For some countries, shipping cost is very cheap and fast, please chat with us, we can show you the difference.
3.Warranty : Yes, electronic products usually 12 month warranty.
4.Oem Odm orders: yes, accept.
5. How to use the model? : follow user menual, or ask us for help.
6. Enjoy your shopping, hope to be friends each other.