The next time a car tries drive in the bike lane, hit ‘em with the 115 decibel blast of the Thunder Horn. To put it in perspective, that’s about as loud as standing in the front row of a Metallica concert. The $12 horn can crank out an earsplitting alert that should wake up even the laziest of drivers and peds.

This manufacturer’s warning pretty much sums it up: “Do not use within 50cm (18 inches) of anyone(s) ears to avoid damage.”

[via GeekAlerts]

For those of you not familiar with the Decibel Scale, that’s somewhere between “Front Rows at Rock Concert” and “Threshold of Pain.” Unfortunately, this video of the phone in action doesn’t really capture just how load 120dB is.

Click to View Embedded Video Clip

Featuring an array of five speakers, and “dynamic 3D sound,” the QKphone 911 suffers from a serious identity crisis. While it’s loaded with all the typical business applications of a Windows Mobile Smartphone, it’s also got a bunch of multimedia capabilities, including a weird media player with a dancing girl on it.

I can only imagine how obnoxious those horrible Crazy Frog ringtones would be on this device.