Strobe light bars 1.waterproof 2.high quality 3.with speaker internal 4.CE,ISO certificated If need flash video,contact with me !Warning light bar1.waterproof2.high quality3.with speaker internal4.CE,ISO certificatedStrobe light bars1)Advantages1. CE and ISO std.2. 1 Year warranty3. Very Prompt Delivery.4. Very Competitive Unit Price.5. Factory directly supply6. Superthin, Ultrathin, Slim LED ...