Certifications for OSUN Brand 1. GB 15742-2001 Speaker Performance Requirement for Motor Vehicle & Testing Methods 2. QC/T 30-2004 Technical Condition of Motor Vehicle Horn 3. CCC China Conpulsory Certification 4. ECER28-93 European"Sound audible warning devices and equipment audible signal for motorvehicle,uniform conditions for approval of recognization." 5. GB15085-94 Wiper Blade Performance Requirement for Motor Vehicle & Testing Methods 6. ISO9000:2008 Quality Management System Certificate 7. ISO/TS16949:2002 Implementation. Product Charateristic 1. Sonority & beautiful voice Make the high-end luxury cars from resonant echo to be reflected,give the luxury cars more perfect and more attractive 2. Long life & reliable quality A. high-quality sonorant diaphragm B. adopt membrane filter technology with waterproof and propulsive gas C. unique adherent point protection craftwork D. high-intensity ABS material,electrophoresis of metal surface treatment E. strong corrosion preventive,anti-hard body impact F. continuous beep up to 1 minute 3. mini-fashion model,easy to install Even in the narrow space,it is also installed in any cars. Technical Parameter: Voltage:12V Working volt:9-15V Operating temperature:-40°C 85°C Electric current:≤3.5A Frequency:L 500±20Hz H 600±20Hz Sound level:110±5dB(A) Life:150,000 times Diameter:75mm Weight:240g Carton:30 pairs Carton measurement:52.2*31.4*37cm Net weight:15kg Gross weight:16kg OSUN Brand live on quality,Quality open the world door. We believe high-end product and high-quality service is our customers'lasting choice.