The Unity Tactical SPARK Multi-Function Waterproof Emergency Strobe is an ultra-compact, disposable personal identification beacon designed to provide rapid visibility and identification friend or foe (IFF) marking in low-light environments. Fully encapsulated within a flexible, translucent silicone housing, this rugged marker light is completely waterproof and built to survive severe field handling or inclement weather conditions. It comes equipped with a secure hook-and-loop backing that allows operators to seamlessly stick it to tactical helmets, plate carriers, chest rigs, or service K9 harnesses. The internal, non-replaceable battery yields a massive operational life cycle of up to 200 hours, ensuring the red LED remains powered through extended missions, training cycles, or emergency signaling scenarios. Users can easily toggle through the integrated menu system—cycling from a subtle constant low, a bright constant high, and a high-visibility hazard flash—by simply compressing the center of the silicone chassis to engage a firm, tactile click.