Emergency SYNC Roadside Safety Lights - Traffic Directors with Built-In Flashlight. The Hendo Wireless Personal Safety Strobe 3-Pack is engineered to replace outdated phosphor flares with a safer, rechargeable, and reusable alternative. Featuring patented SYNC Technology, all three strobes flash in perfect sequence to maximize visibility for traffic control, roadside emergencies, construction zones, and law enforcement operations.Lightweight, compact, and versatile, these strobes can be worn, mounted, or deployed roadside for maximum visibility in hazardous or low-light environments.Perfect For: Emergency Roadside Kits - Safer, reusable replacement for phosphor flares. Construction & Utility Crews - Direct traffic and mark hazards with synchronized strobes. Law Enforcement & First Responders - Manage traffic flow and increase safety at night. Cyclists, Pedestrians & Work Crews - Wearable strobe for maximum personal visibility.