Esto es un libro serio o es una tomadura de pelo? Escrito a triple espacio y letra para miopes. The O- is 59 grams, depending on what else you put on it. I am definitely going to order one in every color! Beyond exceeded my expectations! I probably should give this a better rating because they do hold up better than Id expected, but it gets a low score because the plastic edges are sharp as knives. Wanted to like these so much more based on all the tech reviews Ive seen for then. I ultimately ended up choosing the case with the splotchy darker red spots on the inside and Ill be sending back the one with the missing fabric on the shelving. I needed a corded headset and with a name of Bose, these did not disappoint at all! I wanted to get rid of my 6+ year old cheap Visio 2. Was not pleased with this item.