The SLXtreme for the iPhone 5 features ruggedized waterproof protection & even more built-in battery-boosting power with an integrated 2300 mAh battery to extend your iPhone’s charge by more than 150%. It also includes a built in solar panel for emergency charge when you're away from a power source. Jam to your tunes in even the wettest environment with a 3.5mm audio jack. The SLX is designed for ease of use and allows you to easily slide your iPhone 5 in and out of the ultra rugged polycarbonate case with mil spec 810G and waterproof IP-68 rating for up to 6 ft. (2m) submerged in water. The most rugged, waterproof, battery-extending protection you will ever find for your iPhone5.