Sweat-resistant earbuds with a secure-fit that give you music that you can feel Skullcandy headphones are custom-tuned to deliver music you can feel in and out of the office. IPX4 Sweat and Water Resistant Sweat-resistant earbuds with a secure-fit that give you music that you can feel Skullcandy headphones are custom-tuned to deliver music you can feel in and out of the office. Call and Track Control Set also features a 3-button in-line mic/remote, so you can control music and calls, adjust volume, and activate your devices assistant with the touch of a button.