This keyboard is a tank. They look as nice as the day I got them; and let me just say, during this quarantine, theyve gotten A LOT of usage. I am keeping them ,I can walk all day in these shoes UNTILL HE CAN PICK HIS OWN, THESE WILL BE THE SANDALS THAT I PURCHASE FOR HIM FROM HERE ON OUT. After I got off work, I took them off to walk to my car and had instant relief. CASE:Zu der eigentlichen Batterieausdauer der MTW kann ich noch nicht sehr viel sagen, aber auf mind. I want more, in several colors. Our full setup includes a simple Behringer UMC404HD, a PreSonus HP4 headphone amp, and were recording straight into Reaper on a laptop. This was my second pair the first pair was a little small so I sent back and ordered a half size bigger. Had them a few months & Im happy with them.