No, it's not a predictor of impending quakes, but the GraGraph will sound an alert and tell you how large the earthquake is on the Richter scale (anywhere from 3 to 10).
Hopefully, you'll never have to use it, so for that reason, it has a built-in LCD clock, alarm and night-light! The GraGraph will also record prior seismic activity. It runs on 4 AA batteries.
This is a Japanese product, but you can snag one from an importer of Japanese products.
(Please note prices are subject to change and the listed price is correct to the best of our knowledge at the time of posting)