5W fit perfectly/comfortably right out of the box! Not only do I use these headphones for gaming (ps4) but I use it while I work from home(pc). Ordered a White Case and it looks very close to the White version of the Powerbeats Pro. It would help to have a native English speaker write the instructions. I bought these shoes for my wife because of the nice design and the promotion. Affordable. These are softer and thinner, so they dont fit as snugly as I like. Durable, connects smoothly. The only reason I needed to reorder was that I lost the sift cover for one of the earbuds and couldnt find my spares. These are mounted through a backplate that makes these super strong.