Autohome&reg; Car Lover Rotating Tire Alarm Clock with Real Loud V8 Engine Ringer 3D Unique Alarm Clock Aotohome is from a designer who is addicted to cars, most of our design full of cars sense. These designs are perfect for car enthusiasts and collectors. Design Patent No: 2005300582644 & 2004200947022 Cool shape-DL18, This clock is a high precision replica of a brake disc with a gas pedal button and brake pedal for alarm controls 3D Ringer - The ringer is the sound of the brake disc rotating at 34 RPM when the alarm goes off or you play the demo, accompanied by the realistic throaty roar of a V8 engine. When turned off the clock says "Good Morning" to greet your day "L" is on key, "N" is off key, "D" is demonstration key (Use it to play the alarm sound anytime) High precision and quality, with a lag time within 1 second of accuracy per day.