I have to leave it empty. This mouse is great, the weight is perfect. My only reason for giving it 4 stars and not 5 is because the bars themselves seem a little on the small side. If you dont see the value in being on a lake and fishing for just over 100 bucks idk what to tell you. Much better grip on these than the Original Universal MsConsTwice the price of the Original Universal MsOverallIf youre going to get a Universal M style, these are the ones to get. Caveat: I wear glasses, so for me the ear-cup seal is not perfect. Genial, de verdad se quedan sujetos a los oídos al hacer ejercicio, la calidad del sonido es tremenda. nothing major but it only bleeps at you wheres my ones say power on and bass effect on etc which is much more usefull knowing what youve pressed. This thing is a beast and I hope to have for years to come for my boat. Other than that I think you?ll enjoy it.