This is far from 300 dB. Sounds like a regular horn, works better than no horn, but is definitely false advertising. I would not recommend buying if you need an air horn or a horn as loud as a train. I would like them to remove the words "train" and "300dB" from the name. 2 out of 5 stars because it is not as described.
📢 Powerful FIAMM 7201622 OEM Dual Horn Assembly for GM/Chrysler/Ford - Superior Sound and Performance
9 Review
🔌 Enhance Your Chevrolet's Horn Sound with FARBIN Car Horn Special Plug: Wiring Harness Pigtail Connector
10 Review
XtremeVision AC 55W HID Xenon Premium Slim Ballast - Get A Pair Of 2 PCS Now!
18 Review
Car compressor Aggressor AGR-75 orange
14 Review