Build quality is good. The only downside is you cannot charge them and use the mic at the same time. However if you choose the setting where the sides don't light up you get 30 hours of battery so you never run out if you just plug them in to the micro USB at night. It still charges when you turn your PC off. It's great being wireless, going to the kitchen and cooking while still listening to spotify is amazing. Both mic and sound quality are good. The only issue I ever had with them was when I stand next to the microwave while it's microwaving something is that it interferes with the signal and it crackles but I don't imagine you'll be sitting beside a microwave often.