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Heat Sensitive iPhone 4/4S Backing
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Heat Sensitive iPhone 4/4S Backing

Enjoy seeing your phone change colors with this heat sensitive backing! This self-adhesive laser cut backing will change colors in the range 90 to 95 degrees F – or just below body temperature. At only .005″ thick, it’ll fit nicely under any bumper you put on your phone too.

Watch as the backing changes color with heat from your hands, pocket, or anywhere else you might put it. It will even change colors to reveal outlines of it’s inner components while playing music, surfing, or while on a phone call!

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