H2O Audio Swim Solution Interval (INT4-BK-SG8) 100% Waterproof submersible to 12ft/3.6m underwater with an IPX8 rating. Safe for use in fresh, chlorine and salt water. The only waterproof iPod case designed specifically for swimmers. Designed for the 4th/5th generation (the current generation) iPod shuffle. Attaches quickly and easily to any swim goggle. With volume and playback controls and integrated in-ear bass amplified Surge+ waterproof headphones. Customizable fit with six ear tips - 5 soft round sizes XS - XL and 1 Tree Tip Connectivity technology: Wired