Portability and Convenience Combines in This Powerful Indoor/Outdoor Portable Speaker. It is the time to meet ION Audio’s newest Game Day speaker Game Day Primetime. This powerful new Game Day wireless speaker from ION Audio is the loudest Game Day speaker yet. The Game Day Prime time is a completely new wireless speaker design with portability and convenience built into it. The Game Day Primetime wireless speaker features a LI-Ion battery and makes it easy to have great audio or music wherever you need or want it.