No instruction and the seller did not send even the email. Since the beginning, the seller has not warned about customs duties. As a result, required 25% of the amount of goods and shipment. The seller went on concessions and paid 1/3 tax. Since it was his fault that he did not write the amount of surcharge in advance. About the device: it works well. EMC has not yet tried, yet I do not know how to connect without instructions. I recommend this device, but the seller can choose more competent and caring. Baybface store, for example, a seller with the same product, but knows the value of the tax in advance and can include in the cost before buying the goods and pay for it and email