I purchased 2 pair of headphones from Amazon. They took 6 weeks to arrive. One of the two headphones is definitely a fake. Very poor workmanship and no serial number imprinted on the headpiece. I think the second pair is also fake but it does have a serial number. The number is engraved in the metal and is very hard to read. Comparing photos of "real" vs "fake" serial numbers I believe these are fake too. I notified Amazon but they want me to send back to seller for a refund. Really??