Assembly time ~75 minutes by myself. The microphone is another thing about these headphones that is very good. I would say that for someone with narrow feet they’d be far too wide. Build. A real must for anyone who loves a good horror film or more so zombie movies. I purchased two of these one after the other on the recommendation of the Sony help line and ironically so he asked me not to use these headphones during our phone call because the quality was so terrible which says its all but even the second set that arrived were just as bad so I would highly recommend if you are using these for phone calls then do not get them but if you are just using them for listening to music and movies etc then they were fairly good however I am going to get another set of The screws were stripped out when it arrived. One for our bathroom and one for my boys bathroom. The microphone sounds just as good as the other Razer Kraken headset microphones if not better, and as I have mentioned, can be customized using the Razer Synapse 3 software. You can set the two independently.