Pong Radiation-redirecting Case for iPhone 5 (Graphite Black) Scientifically engineered case can improve signal strength by up to 20% and protect against dropped calls. Efficient antenna performance can increase talk-time battery life by up to 1.3 hours. Pong technology can reduces exposure to wireless radiation by up to 91% below international safety limits, by redirecting cell phone radiation away from your head and body. Unlike radiation shields that may hurt your signal, the Pong case redirects radiation a way from your head, which optimizes your signal Sleek Soft Touch case provides durable protection, shock absorption and scratch protection Compatible with the Apple Lightning to 30-pin Adapter