As its name implies, the H2Pro packs a 2,950mAh battery, which provides up to an additional 17 hours of talk time, 8 hours of Internet use, or 10 hours of video watching. With mixed usage, the H2Pro should bump up either jumbo smartphone’s battery life by up to 70 percent.

However, the H2Pro’s claim to fame is its waterproofing — the case is rated IP68, so you won’t need to worry about dropping your iPhone 6 Plus or 6S Plus into a pool and leaving it in there for 30 minutes. Thanks to the protective layer over the body of the phone, as well as a scratch-resistant membrane over Touch ID, the H2Pro can also withstand bumps, spills, and scratches. Don’t worry, though — even though there is a membrane over Touch ID, it can still be used to gain access to your iPhone.

If you’re feeling a little adventurous, the military drop test standard rating of MIL STD 810G-516.6 ensures you can drop the H2Pro from a height of almost four feet. The rating also protects your iPhone from vibrations and shocks, so feel free to use the H2Pro during your next hiking adventure.

Mophie’s battery cases tend to not be the cheapest around, and that trend continues with the Juice Pack H2Pro for the iPhone 6 Plus and 6S Plus currently available for $130. Regardless, if you’re someone who can be incredibly clumsy with liquids around your smartphone, the $130 you’ll spend on the H2Pro is a bargain compared to the hundreds you’ll need to spend if you ever spill liquid on your phone.