Features: 1.The earthquake detector is designed to provide instant warning of seismic activity by detecting the P wave compression wave of an earthquake, which travels faster than the more destructive S wave shear wave. 2.The earthquake detector saves valuable seconds by removing the guesswork in earthquake detection. It is capable of detecting large earthquakes that occur hundreds of mile away and can detect moderate to minor earthquakes for many mile around your local area. 3.One very important advantage of The earthquake detector is that it can wake you up and alert you the moments the quake starts so that you can immediately take cover or tend to other family members. 4.The earthquake detector can eliminate confusion, save valuable seconds and provide peace of mind. 5.Automatic reset and cut-off alarm when the earthquake stops.Can be easily mounted on the wall. Notice: Actual color may be slightly different from the image due to different monitor and light effect Specification: Type:Earthquake Detector Battery:Need 9V BatteryNot inlcuded Package List: 1x Earthquake Detector Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.