DROP+ Protection by OtterBox

Legendary OtterBox protection you can depend on to keep your device safe.


Device with OtterBox case dropping

Passion for Protection

DROP+ is a promise that every product we make is ready for whatever life throws at it. And that your device is protected so you can stay connected to the people, places and moments that matter most.

We test OtterBox cases for everything you can think of. And a lot of things you probably wouldn’t even imagine. Each OtterBox case series must pass every test before it receives the DROP+ designation.


What is Military Standard?

Military Standard (MIL-STD)* is a series of tests designed by the US Department of Defense to determine the overall durability of a product.

It requires a case and device be dropped 26 times from 4 feet. This proves the edges, corners, front and back of a case prevail through multiple impacts and that we’ve made the toughest phone case possible.

*MIL-STD-810G 516.6
OtterBox Defender Series case dropping on rocky terrain.

OtterBox case dropping on concrete stairs.

MIL-STD Meets the OtterBox Standard

We take our testing even further and subject our cases to MIL-STD testing multiple times.

1X, 2X, 3X, 4X, 5X — we fatigue test our cases again and again to ensure they survive drop after drop, not just the first few.

- 1X = 26 individual drops from 4 feet
- 2X = 52 individual drops from 4 feet
- 3X = 78 individual drops from 4 feet
- 4X = 104 individual drops from 4 feet
- 5X = 130 individual drops from 4 feet


Protection is in our DNA

24+ tests

The + in DROP+ represents the extra tests our engineers perform in addition to MIL-STD to deliver the device defense you need.

Top-secret tests are performed in the OtterBox Prototype Innovate Test (P.I.T.) Lab to make sure your device is protected from the unexpected.

OtterBox case dropping on the ground.