windshield design: more accurate sound collection, Filter the effect of wind on sound LED-backlit large-screen display: high-intensity backlit screen, easy to deal with harsh environments such as strong light/night. Capacitive microphone sensor: high- sensor with excellent sensitivity and accuracy Multi-collar city application: factory/workshop/school/residential/office/traffic road and other occasions., Weight: 0.23368999772 pounds, Manufacturer: tiyao