nexpaq allows you to easily customize, enhance, and add features to your smartphone through the case. To put it simply: You can add and remove physical “modules” (think Lego bricks with special powers) directly from the back of your case without powering down. Modules are interchangeable between iOS and Android phones. The case is currently compatible with iPhone 6, Samsung Galaxy S6 Edge and Samsung Galaxy S5, and is expected to be available November 2015.

The 12 modules currently available include:

Battery power – provides up to 60 percent more battery power
Amplified speaker – makes your phone up to 60 percent louder
Super LED flashlight – helps you see and provides better light for photos
SD card reader – plugs in an SD card for added storage space
Temperature and humidity – takes your temperature or that of objects around you
Hotkeys – sets up shortcuts to access phone functions faster
USB flash – 32 GB and 64 GB modules available
Air quality – checks for potentially dangerous or toxic gases
Breathalyzer – know when you or your friends should or shouldn’t drive
Laser – great for meetings and presentations
Backup – a tiny 64 GB hard drive
Dummy – fill empty slots in a snap